NCERT Exercise 6.45 - Equilibrium

Question: For H2S, Ka1 = 9.1 x 10^-8 and Ka2 = 1.2 x 10^-13. Find HS- and S2- in 0.1 M H2S, with and without 0.1 M HCl.

Answer: [HS-] = 9.54 x 10^-5 M, falling to 9.1 x 10^-8 M with HCl; [S2-] = 1.2 x 10^-13 M, falling to 1.09 x 10^-19 M.

Full step-by-step NCERT solution with diagrams on Something by Zero.

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