InterviewSolution
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InterviewSolution
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An equeous solution contains `0.10MH_(2)Sand 0.20M HCl.` If the equlibrium constants for the formation of HS from `H_(2)S` is `1.0xx10^(-7)` and that of `S^(2-)` from HS ions is `1.2xx10^(-13)` then the concentration of `S^(2-)` ions in aquesous solution isA. `3xx10^(-20)`B. `6xx10^(-21)`C. `5xx10^(-19)`D. `5xx10^(-8)` |
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Answer» Correct Answer - A `{:(HCl to, H^(+),+, CI^(-)),(,(0.2+x+y),,0.2):}` `{:(H_(2)ShArrH^(+),+, HS^(-):Ka_(1)=10^(-7)),(0.1-x(0.2+x+y),,(x-y)),(HS^(-)hArrH^(+),+,S^(2-):K_(a_(2))=1.2xx10^(-13)):}` |
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