The relative abundance, for electrons of 72 volts energy, and the appearance potential are given for each ion. At what concentration of sulfide ion will a precipitate begin to form? K = [O2]^5 What is the approximate pH of a solution X that gives the following responses with the indicators shown? Just remember that KaKb = Kw. Aniline, (C6H5NH2, Kb = 4.3 10-10 at 25C) is an industrially important amine used in the making of dyes. American chemist G.N. 4.52 10-6 The equation for the dissociation Write the equilibrium expression and calculate the value of Ka f. The ionization constant for hypochlorous acid (HClO) is K_a= 2.8 times 10^{-8} at T= 25 degrees C. Find the pH for an aqueous solution that is 0.0500 M in HClO. A bu er is prepared that is 0.100 M in phenylamine and 0.200 M in phenylammonium cation (C 6H 5NH + 3). Calculate the value of Ka for chlorous acid at this temperature. The reaction will shift to the left in the direction of the reactants. The acid dissociation constant for this monoprotic acid is 6.5 10-5. Answer: B. ( Ka = 9.8 10 5 ) Solution: This is a weak acid equilibrium calculation. Ksp(CuS) = 1.3 10-36, Ksp(FeS) = 6.3 10-18. Acid dissociation constant will be calculated as:Kw = Ka Kb, where, Kw = dissociation constant of water = 10, Kb = base dissociation constant for pyridine = 1.4 10, Ka is an acid dissociation constant will be calculated as:Ka = Kw / Kb, On putting these values on the above equation, we get:Ka = 10 / 1.4 10, To know more about acid dissociation constant, visit the below link:brainly.com/question/26998, This site is using cookies under cookie policy . 8.5 10-7 M Answer to: Which of the following acid-base conjugate pair is suitable for preparing a buffer solution with (H3O+) concentration of 1 10^-9 M? Fe3O4(s) + CO(g) 3 FeO(s) + CO2(g) H= +35.9 kJ Which metal could you use to reduce Cr3+ ions but not Mn2+ ions? HClO4(sol) + CH3COOH(l) CH3C2(OH)2+(sol) + ClO4-(aq) 2 Hg(g) + O2(g) 2 HgO(s) H= -304.2 kJ; S= -414.2 J/K The pH of 0.050 M cyanic acid, HOCN(aq), is 2.38. a) Write the hydrolysis reaction for this acid. It's a bit more complicated in aqueous solution, but I believe it favors the generation of HF, which would make it an acid (proton donor). increased strength lithium fluoride forms from its elements Solved The Base Dissociation Constant Kb For Pyridine C5h5n Is 1 7 X 10 9 Acid Ka Pyridinium Ion C5h5nh. K b = 1.9 10 -9? This compound is a salt, as it is the product of a reaction between an acid and a base. 1.2 10^-6 0.232 HI What are the Brnsted-Lowry acids in the following chemical reaction? +524.1 kJ, For a given reaction, H = +35.5 kJ/mol and S = +83.6 J/Kmol. The percent dissociation of acetic acid changes as the concentration of the acid decreases. Calculate the H3O+ in a 0.025 M HOBr solution. This compound is a salt, as it is the product of a reaction between an acid and a base. 3.65 10-6 M P(O2) = 0.41 atm, P(O3) = 5.2 atm . Adsorption State of 4,4-Diamino- p -terphenyl through an Amino Group Bound to Si(111)-7 7 Surface Examined by X-ray Photoelectron Spectroscopy and Scanning Tunneling Microscopy Calculate the pH of a buffer solution that is 0.125 M in C5H5N and 0.125 M in C5H5NH+. Q > Ksp {/eq}. Acetic acid CH3COOH, has an acid dissociation constant of 1.8 10-5. What is the conjugate acid of ammonia and what is its acid dissociation constant? Xe, Part A - Either orPart complete Which two factors must be equal when a chemical reaction reaches equilibrium? What are the difficulties in developing perennial crops? Fe(s) | Cl2(g) || Fe3+(aq) | Cl-(aq) | Pt, Use the standard half-cell potentials listed below to calculate the standard cell potential for the following reaction occurring in an electrochemical cell at 25C. Al(s), Which of the following is the strongest oxidizing agent? HHS Vulnerability Disclosure. AgCN, Ksp = 5.97 10-17, Calculate the K sp for zinc hydroxide if the solubility of Zn (OH)2 in pure water is 2.1 10-4 g/L. 0.59, A solution with a hydroxide ion concentration of 4.15 10-5 M is ________ and has a hydrogen ion concentration of ________. 19.9 10.83. H2O = 7, Cl- = 3 A and B only, What is the edge length of a face-centered cubic unit cell made up of atoms having a radius of 128 pm? Calculate the pH of the solution that results when 0.40 g of KHP is dissolved in enough water to produce 25.0 mL of solution. sodium Molar Mass, Molecular Weight and Elemental Composition Calculator. A buffer contains a significant amount of ammonia and ammonium chloride.Write an equation showing how the buffer neutralizes added acid or base. Determine the Kb and the degree of ionization of the basic ion. You may feel disconnected from your thoughts, feelings, memories, and surroundings. You can ask a new question or browse more college chemistry questions. The Ka for hypobromous acid, HOBr is 2.5 x 10^{-9}. base of H 2PO 4 - and what is its base B)Enter the the Ksp expression forC2D3 in terms of the molar solubility x. Jimmy aaja -M.I.A. Formic acid had a K_a = 1.80 times 10^{-4} in water at 25 degrees C and 1 bar. (Ka = 3.5 x 10-4), Find the H3O+ of a 0.21 M hypochlorous acid solution. What is the pH of a 1.2 M pyridine solution that has K b = 1.9 10 -9? What effect will increasing the volume of the reaction mixture have on the system? Cu(s) is formed at the cathode, and Ag+(aq) is formed at the anode. C5H5N(aq)+H2)C5H5NH+(aq)+OH-(aq) Advertisement Advertisement New questions in Chemistry. -0.66 V Breaks in this system of automatic functions can cause dissociation symptoms. Keq = Ka (pyridineH+) / Ka (HF). What is the value of Kb for CN-? FOIA. Which of the following statements is TRUE? Its asking to determine if its acidic or base. K = [O2]^-5 The reaction will shift to the right in the direction of products. F2 Note: The Degree of dissociation of any solute within a solvent is basically the ratio of molar conductivity at C concentration and limiting molar conductivity at zero concentration or infinite dilution. C5H5N(aq) + H2O(l) C5H5NH+(aq) + OH-(aq). The properties listed above that would apply to (NH4)2CO3 would be what Dissociation can range from feeling a mild sense of detachment (daydreaming) to experiencing a more severe disconnection from reality (feeling as if the world is unreal). The equation for the dissociation of pyridine is What is the hydronium ion concentration of an acid. What is the % ionization of the acid at this concentration? Xe, Which of the following is the most likely to have the lowest melting point? HCl, Identify the strongest acid. NaOH, HBr, NaCH3CO2, KBr, NH4Br. 6.5 10-5 M, Give the equation for an unsaturated solution in comparing Q with Ksp. Dissociation is a break in how your mind handles information. Download Citation | On Feb 28, 2023, Ellen C. Czaplinski and others published Experimental Characterization of the Pyridine:Acetylene Co-crystal and Implications for Titan's Surface | Find, read . No effect will be observed since C is not included in the equilibrium expression. spontaneous What element is being oxidized in the following redox reaction? Calculate the pH of a 0.020 M carbonic acid solution, H2CO3(aq), that has the stepwise dissociation constants Ka1 = 4.3 10-7 and Ka2 = 5.6 10-11. None of the above statements are true. P We know from our chemistry classes that: The base-dissociation constant, kb, for pyridine, c5h5n, is 1.4x10-9 the acid-dissociation constant, ka, for the pyridinium ion, (pyridine's conjugate acid, is __________. If Ka = 1.5 x 10^-7 for this reaction, what is the pH of a 0.3 M solution of H2S? -2, Part A Part complete Fe The Ka and Kb are interchangeable with that formula. 0.062 M 1.94. K = [KOH]^1/2[H2]/[K]^1/2[H2O]^1/2, Determine the value of Kc for the following reaction if the equilibrium concentrations are as follows: [H2]eq = 0.14 M, [Cl2]eq = 0.39 M, [HCl]eq = 1.6 M. Consider the following reaction at equilibrium. The pH of a 0.10 M solution of a monoprotic acid is 2.96. 22.2 Suniverse is always greater than zero for a nonspontaneous process. Choose the statement below that is TRUE. Ka = 1.9 x 10-5. 8.9 10-18 Use henderson-hasslelbalch to calculate pH of a solution that is 0.135 M HClO and 0.155 M KClO. Entropy increases with dissolution. increased malleability 5.51 10^5, What is n for the following equation in relating Kc to Kp? Q: a. CHCHCHCH-Br b. C. 4. LiF (Ka = 2.5 x 10-9), Calculate the H3O+ in a 0.045 M HOBr solution. 0.118 We reviewed their content and use your feedback to keep the quality high. A solution containing CaCl2 is mixed with a solution of Li2C2O4 to form a solution that is 2.1 10-5 M in calcium ion and 4.75 10-5 M in oxalate ion. NH3 + HOH ==> NH4^+ + OH^- The equilibrium constant for the equilibrium will be: CN +CH 3COOHHCN+CH 3COO . a.) . Seattle, Washington(WA), 98106. For example: 7*x^2. -472.4 kJ The acid dissociation constant of nitrous acid is 4 10-4. C5H5NH+ F- -> C5H5N + HF. b. Q = Ksp What is the [CH3CO2-] / [CH3CO2H] ratio necessary to make a buffer solution with a pH of 4? A: Click to see the answer. 2.9 10-3 82.0 pm Which one of the following salts, when dissolved in water, produces the solution with a pH closest to 7.00? Calculate the H3O+ in a 1.3 M solution of formic acid. What is the pH of a 0.11 M solution of the acid? Calculate the pH of a solution that is 0.147 M in pyridine and 0.189 M in pyridinium chloride. -47.4 kJ acid dissociation constant? a.) Ecell is positive and Grxn is positive. HCl+NH3NH4 + Cl. Contact. Calculate the pH of a solution of 0.157 M pyridine. The equilibrium constant will increase. NH3(aq) + H2O(l) NH4+(aq) + OH-(aq). Wha. Ssys>0, N2(g)+3H2(g)2NH3(g)N2(g)+3H2(g)2NH3(g) Cd(s) 2R(g)+A(g)2Z(g) 0.100 M NaOH molecular solid Potassium hydrogen phthalate (molar mass = 204.2 g/mol) is one of the most commonly used acids for standardizing solutions containing bases. 1) Write the ionization equation for. 3.4 10^2, Express the equilibrium constant for the following reaction. Which acid has the lowest percent dissociation? What is the pH of a 0.15 molar solution of this acid? LiCN A precipitate will form since Q > Ksp for calcium oxalate. Deltoid muscle _____ 2. Exothermic processes decrease the entropy of the surroundings. The dissociation constants for acetic acid and HCN at 25 o C are 1.510 5 and 4.510 10, respectively. 1.3 10^3 Work Plz. B and C only C5H5N, 1.7 10^-9 An acidic solution at 25C will have a hydronium ion concentration ________ and a pH value ________. The Ka of a monoprotic acid is 4.01x10^-3. Determine the pH of a 0.324 M C5H5N solution at 25 degrees Celsius. donates electrons. Get access to this video and our entire Q&A library, The Bronsted-Lowry and Lewis Definition of Acids and Bases. 29 PbS, Ksp = 9.04 10-29 NO3-(aq) + H2O(l) HNO3(aq) + OH-(aq). Ksp for Fe(OH)2= 4.87 10-17. A Bronsted acid/base is a substance that donates/accepts ionized hydrogens (protons) in aqueous solution respectively. Ag(s) is formed at the cathode, and Cu2+(aq) is formed at the anode. All of the above will form basic solutions. National Library of Medicine. (1) What is the [OH-] (molarity) of a 0.1660 M piperidine? Kb = 1.80 10?9 . gC, how old is this artifact? K = [PCl3]^2/[P]2[Cl2]3, When the following reaction comes to equilibrium, will the concentrations of the reactants or products be greater? K = [P][Cl2]^3/2/[PCl3] Ka = 2.5E-9. (Ka = 3.5 x 10-8). 5.6 10^-10, All of the above will form basic solutions, Which one of the following will form a basic solution in water? B) HSO4-(aq) + H2O(l) SO42-(aq) + H3O+(aq). 6.1 1058 ionic solid H2PO4-(aq) + H2O(I) arrow HPO42-(aq) + H3O+(aq) Write the Ka expression for this reaction. Lewis base Explain why pure liquids and solids can be ignored while writing the equilibrium constant expression. +0.01 V Acid dissociation is an equilibrium. HCN, 4.9 10^-10 At equilibrium, the H+ in a 0.280 M solution of an unknown acid is 4.12 x 10-3 M. Determine the degree of ionization of this acid. 47 Presence of acid rain Nickel can be plated from aqueous solution according to the following half reaction. -1 acidic The reaction will shift to the right in the direction of products. K = [PCl3]/[P][Cl2]^3/2 H3O+, Which Brnsted-Lowry acid is not considered to be a strong acid in water? Given that Ka for HCN is 4.9 * 10^ 10 and K b for NH3 is 1.8 * 10^-5 at 25.0 degrees C, calculate Kb for CN and Ka for NH4+. 2.10 Ar > N2H4 > HF It is not possible to make a buffer of this pH from HCHO2 and NaCHO2. This is all equal to the base ionization constant for ammonia. K(l) and I2(g) Write the corresponding acid ionization reaction and determine the value of {eq}K_a metallic atomic solid, Identify the type of solid for ice. A tablet containing 500.0 mg of aspirin (acetylsalicylic acid or HC9H7O4) was dissolved in enough water to make 100 mL of solution. This is an example of an acid-base conjugate pair. The Ka of HCN is 6.2 x 10-10. (Hint: Calculate Ka. HA H3O+ A- A solution that is 0.10 M HCN and 0.10 M LiC, Which of the following solutions is a good buffer system? What is the pH of a 0.190 M. donates more than one proton. -210.3 kJ Solved Write The Balanced Equation For Ionization Of Weak Base Pyridine C5h5nc5h5n In Water H2oh2o Phases Are Optional I M Putting This Answer And It Says Is Wrong. C5H5N + H2O<-->C5H5NH+ + OH- The pKb of pyridine is 8.75. Pyridinium chloride. Express the equilibrium constant for the following reaction. A) CH3COOH B) H2CO3 C) HCOOH D) H3C6H5O7 E) CH3CH2COOH, _____ is the active component in vinegar. What is the Ag+ concentration when BaCrO4 just starts to precipitate? Poating with Zn The equilibrium constant will decrease. What is the hydronium ion concentration of a 1.5 M solution of HCN (Ka = 4.9 x 10^-10) at 25 degrees Celsius? Find the pH of a solution prepared by adding 0.0500 mol of formic acid and 0.02000 mol of its sodium salt to 1 kg of water. When dissolved in water, which of the following compounds is an Arrhenius acid? What is the conjugate acid of ammonia and what is its What is the hydroxide ion concentration of a lye solution that has a pH of 11.20? AgCl(s) + e- Ag(s) + Cl-(aq) E = +0.222 V Q = Ksp Multivalent Ar > HF > N2H4 A)4.9 10-24 B)2.0 10-5 C)2.0 109 D)4.0 . The dissociation of C 6 H 6, C 5 H 5 N, and C 6 H 12 by electron impact has been investigated with a mass spectrograph. spontaneous 2.3 10^-3 N2H4 > Ar > HF the concentrations of the products, What is n for the following equation in relating Kc to Kp? Ka is an acid dissociation constant will . c) Calculate the K_a value for HOCN. This can be mathematically represented as \[\alpha = \dfrac{{{\Lambda _C}}}{{{\Lambda _0}}}\]. At 25C, the pH of a vinegar solution is 2.60. b) Write the equilibrium constant expression for the base dissociation of HONH_2. Nothing will happen since Ksp > Q for all possible precipitants. Entropy is an extensive property. accepts electrons. potassium iodide dissolves in pure water Ssurr = -321 J/K, reaction is spontaneous AP . Solved Write The Balanced Equation For Ionization Of Chegg Com. 0.100 M HCl and 0.100 M NaOH Pyridine, C5H5N, has Kb = 1.7 x 10-9 and reacts with water as C5H5N + H2O arrow C5H5NH+ + OH-. 1)Enough of a monoprotic acid is dissolved in water to produce a 0.0103 M solution. he pKa of HCHO2 is 3.74 and the pH of an HCHO2/NaCHO2 solution is 3.11, which of the following is TRUE? A solution that is 0.10 M HCN and 0.10 M K Cl. 4 d) What is the pH of 0.250 M HONH, Formic acid is a weak acid with a ka value of 1.8x10^-4 At 25 degree celsius a solution with a concentration of 0.424M formic acid is prepared in a laboratory. A: The E2 mechanism will be proceed by strong base. What is the value of Kc for the reaction at the same temperature? Calculate the Ka for the acid. sorry for so many questions. Determine the pH of an aniline solution made by dissolving 3.90 g of aniline in enough water to make 100 mL of solution. Numerical Response H2O = 6, Cl- = 10, What is the reducing agent in the redox reaction represented by the following cell notation? (b) What must be the focal length and radius of curvature of this mirror? HNO3(aq) + H2O(l) H3O+(aq) + NO3-(aq) H2Se Part A-Using K, to Calculate OH What is the pH of a 0.65 M solution of pyridine, C5H5N? b) What is the % ionization of the acid at this concentration? 353 pm 8600 Rockville Pike, Bethesda, MD, 20894 USA. Fe3+(aq) What percent ionization would be expected for a 0.400 M HN3(aq) solution at 25 degrees Celsius? What is the pH of a 0.375 M solution of HF? titration will require more moles of base than acid to reach the equivalence point. What type of solution is this? Phase equilibrium can be reached after. Enough of a monoprotic acid is dissolved in water to produce a 0.0138 M solution. 8.7 10-2 Identify all species as acids and bases and identify the conjuate acid-base pairs. Ne, Which of the following substances should have the highest melting point? Calculate the pH of a buffer solution that is 0.396 M in C_5H_5N and 0.348 M in C_5H_5NH^+. The K sp for Ag2CrO4 and BaCrO4 are 1.1 10-12 and 1.2 10-10 respectively. The strength of a Bronsted acid/base and the strength of its conjugate base/acid are directly related to each other. Four doubly charged and thirty-one singly charged positive ions were observed in the dissociation of benzene. pH will be less than 7 at the equivalence point. What is the hydronium ion concentration of a 0.40 M solution of HCN (Ka = 4.9 x 10-10) at 25 degrees Celsius? A: Given: The concentration of HONH2 solution = 0.84 M Kb (HONH2) = 1.0 x 105 To Calculate: pH of the. The equilibrium constant will increase. If you know Kb for ammonia, NH3, you can calculate the equilibrium constant, Ka, for the following reaction: Which of the following indicates the most basic solution? No effect will be observed. Li(s) C5H5NHF -> C5H5NH+ + F-. -656 kJ What is the equilibrium constant expression (Ka) for the acid dissociation of hydrocyanic acid HCN? spontaneous PbSO4, Ksp = 1.82 10-8 CO32- 8. 0.100 M HBr and 0.100 M KBr, A 1.0-L buffer solution is 0.12 M in HNO2 and 0.060 M in KNO2. There is insufficient information provided to answer this question. You can specify conditions of storing and accessing cookies in your browser. An aqueous solution is a solution that has water as the solvent. 3.0 10-4 M, Which of the following compounds will have the highest molar solubility in pure water? 3.41 10-6 M Calculate the pH of a 0.065 M C5H5N (pyridine) solution. K Which of the following represents a conjugate acid-base pair? 5.5 10-2 M Q > Ksp HF N2H4 Ar 2.61 10-3 M H2CO3 The reaction will shift to the left in the direction of reactants. Determine the Ka for CH3NH3+ at 25C. The ionization constant (Kb) of pyridine (C5H5N) is 5.62 x 10-4. The equation for the dissociation of pyridine is C5H5N(aq) + H2O(l) C5H5NH+(aq) + OH-(aq). None of the above are true. -48.0 kJ 1.02 10-11 H2C2O4 = 3, H2O = 2, Balance the following reaction under basic conditions. CH3COOH(aq) + H2O(l) H3O+(aq) + CH3CO2-(aq). LiBrO Write the corresponding acid ionization reaction and determine the value of Ka for that reaction (assume 25 degrees Celsius). Ka is the equilibrium constant for the dissociation of a weak acid and Kb is the equilibrium constant for the dissociation of a weak base. NH3, 1.76 10^-5 View solution. See reaction below. nonspontaneous, The extraction of iron metal from iron ore. Given that Kb for (CH3)2NH is 5.4 * 10-4 at 25degree C, what is the value of Ka for (CH3)2NH2, calculate the pH of a .030 M C5H5N (pyridine) solution. Diaphragm _____ 3. pH will be equal to 7 at the equivalence point. 1, Part A Part complete K = [P4O10]/[P4][O2]^5, Express the equilibrium constant for the following reaction. Posterior Thigh _____ 4. C3H8O2(aq) + KMnO4(aq) C3H2O4K2(aq) + MnO2(s) Calculate Ka for HOCN. NH3 and H2O We can write a table to help us define the equation we need to solve. RbI [HCHO2] > [NaCHO2] 3. (The Ka for HCN is equal to 6.2 x 10-10.). The initial reaction of hexachlorodisilane (Si2Cl6, HCDS) on amorphous silica (SiO2) surface for atomic layer deposition was investigated using density functional theory. (a) Write the dissociation equation for the reaction of H A in pure water. +48.0 kJ adding 0.060 mol of HNO3 (a) Write the balanced chemical equation for this acid-base reaction, identifying the conjugate acid/base pairs. Both Ecell and Ecell are positive. All other trademarks and copyrights are the property of their respective owners. all of the above, Which of the following acids will have the strongest conjugate base? HNO2, 4.6 10^-4 KClO2 The species in this pair are chemically identical, except for one hydrogen and one unit of charge. CO2(g) + C(graphite) 2 CO(g) Get control of 2022! Calculate the pH of a solution that is 5.91 x 10-2 M in HF and 2.99 x 10-1 M in the salt LiF? Given that at 25.0 degree C Ka for HCN is 4.9 * 10-10 and Kb for NH3 is 1.8 * 10-5, calculate Kb for CN- and Ka for NH4+. 91) What is the pH of a 0.30 M pyridine solution that has a Kb = 1.9 10-9 ?The equation for the dissociation of pyridine is A) 4.62 B) 8.72 C) 9.38 D) 10.38 CO Calculate the Ka for the acid. titration will require more moles of base than acid to reach the equivalence point. HNO3 Find the H+ and the percent ionization of nitrous acid in this solution. copyright 2003-2023 Homework.Study.com. Sn(s) | Sn2+(aq, 0.022 M) || Ag+(aq, 2.7 M) | Ag(s) adding 0.060 mol of KNO2 thank you. Mg A)7.1 10-4 B)1.0 10-7 C)7.1 10-6 D)1.4 10-23 E)1.4 10-5 32) 33)The Ka for HCN is 4.9 10-10. Why is the bicarbonate buffering system important. at T > 298 K Ka of HF = 3.5 104. 2 SO2(g) + O2(g) 2 SO3(g) 6.8 10-2 M A Lewis base Calculate the K_a for the acid. What is the pH of a 0.050 M solution of pyridine, Kb = 1.4 x10^-9? Which of the following should have the lowest bond strength? 1.37 10^9 The K b is 1.5 10 9 . Both Ecell and Ecell are negative. Presence of NaBr What is the pH of a 1.2 M pyridine solution that has Use these concentrations to find the mass of the two chemical species in this sample, #10^3color(red)(cancel(color(black)("g solution"))) * ("0.800 g C"_5"H"_5"N")/(100color(red)(cancel(color(black)("g solution")))) = "8.00 g C"_5"H"_5"N"#, #10^3color(red)(cancel(color(black)("g solution"))) * ("0.990 g C"_5"H"_5"NHCl")/(100color(red)(cancel(color(black)("g solution")))) = "9.90 g C"_5"H"_5"NHCl"#, Use the molar masses of the two compounds to determine how many moles of each you have present, #8.00 color(red)(cancel(color(black)("g"))) * ("1 mole C"_5"H"_5"N")/(79.1color(red)(cancel(color(black)("g")))) = "0.10114 moles C"_5"H"_5"N"#, #9.90color(red)(cancel(color(black)("g"))) * ("1 mole C"_5"H"_5"NHCl")/(115.56color(red)(cancel(color(black)("g")))) = "0.085670 moles C"_5"H"_5"NHCl"#, Now, pyridinium chloride dissociates in a #1:1# mole ratio to form pyridinium cations and chloride anions, #"C"_ 5"H"_ 5"NHCl"_ ((aq)) -> "C"_ 5"H"_ 5"NH"_ ((aq))^(+) + "Cl"_((aq))^(-)#.