\( K_{a_{1}}, K_{a_{2}} \) and \( K_{a_{3}} \) are the respective ionisation constants for the f...
\( K_{a_{1}}, K_{a_{2}} \) and \( K_{a_{3}} \) are the respective ionisation constants for the following reactions.
\( \mathrm{H}_{2} \mathrm{~S} \rightleftharpoons \mathrm{H}^{+}+\mathrm{HS}^{-} \)
\( \mathrm{HS}^{-} \rightleftharpoons \mathrm{H}^{+}+\mathrm{S}^{2-} \)
\( \mathrm{H}_{2} \mathrm{~S} \rightleftharpoons 2 \mathrm{H}^{+}+\mathrm{S}^{2-} \)
The correct relationship between \( K_{a_{1}}, K_{a_{2}} \) and \( K_{a_{3}} \) is
(a) \( K_{a_{3}}=K_{a_{1}} \times K_{a_{2}} \)
(b) \( K_{a_{3}}=K_{a_{1}}+K_{a_{2}} \)
(c) \( K_{a_{3}}=K_{a_{1}}-K_{a_{2}} \)
(d) \( K_{a_{3}}=K_{a_{1}} / K_{a_{2}} \)
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