Ka1 Ka2 and Ka3 are the respective ionization constants for the follow

1.	Ka1 Ka2 and Ka3 are the respective ionization constants for the following reactions-H2S ⇌ H+ + HS-H2S- ⇌ H+ + S2-H2S ⇌ 2H+ + S2-Write the correct relationship between Ka1, Ka2 and Ka3.
Answer» For the reaction, H₂S ⇌ H⁺ + HS⁻ Ka₁ = \(\frac{[H^+][HS^-]}{[H_2S]}\) For the reaction, HS^-⇌ H⁺ + S^2- Ka₂ = \(\frac{[H^+][S^{2-}]}{[HS^{-}]}\) When above reactions are added, their equilibrium constants are multiplied. So, for the reaction, H₂S ⇌ 2H⁺ + S^2- Ka₃ = \(\frac{[H^+]^2[S^{2-}]}{[H_2S]}\) = Ka₁ x ka₂ \(\therefore\)Ka₃= Ka₁x ka₂

Ka1 Ka2 and Ka3 are the respective ionization constants for the following reactions-H2S ⇌ H+ + HS-H2S- ⇌ H+ + S2-H2S ⇌ 2H+ + S2-Write the correct relationship between Ka1, Ka2 and Ka3.

Answer»

For the reaction,

H₂S ⇌ H⁺ + HS⁻

Ka₁ = \(\frac{[H^+][HS^-]}{[H_2S]}\)

For the reaction,

HS^-⇌ H⁺ + S^2-

Ka₂ = \(\frac{[H^+][S^{2-}]}{[HS^{-}]}\)

When above reactions are added, their equilibrium constants are multiplied. So, for the reaction,

H₂S ⇌ 2H⁺ + S^2-

Ka₃ = \(\frac{[H^+]^2[S^{2-}]}{[H_2S]}\)

= Ka₁ x ka₂

\(\therefore\)Ka₃= Ka₁x ka₂

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Ka1 Ka2 and Ka3 are the respective ionization constants for the following reactions-H2S ⇌ H+ + HS-H2S- ⇌ H+ + S2-H2S ⇌ 2H+ + S2-Write the correct relationship between Ka1, Ka2 and Ka3.

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