InterviewSolution
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InterviewSolution
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Consider the reaction, `Cl_(2)(aq) + H_(2)S(aq) rarr S(s) + 2H^(+) (aq) + 2Cl^(-)(aq)` The rate equation for this reaction is, Rate `=k [Cl_(2)][H_(2)S]` Which of these mechanisms is`//`are consistent with this rate equation ? (I) `Cl_(2) + H_(2)S rarr H^(+) + Cl^(-) + Cl^(+) + HS^(-)` (slow) `Cl^(+) + HS^(-) rarr H^(+) + Cl^(-) + S` (fast) (II) `H_(2)S hArr H^(+) +HS^(-)` (fast equilibrium) `Cl^(+) + HS^(-) rarr 2 Cl^(-) + H^(+) + S` (slow)A. (a) `2 only`B. (b) `Both 1 and 2`C. (c ) `Neither 1 nor 2`D. (d) `1 only` |
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Answer» Correct Answer - d Rate depends upon the slow step, thus slow step should involve `1` molecule of `Cl_(2)` and `1` molecule of `H_(2)S`. Hence, `1` is the correct mechanism. Rate=`K[Cl_(2)][H_(2)S]` |
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