Consider the reaction : Cl2(aq) + H2S(aq) → S(s) + 2H^+(aq) + 2Cl^–(aq)
Consider the reaction :
Cl2(aq) + H2S(aq) → S(s) + 2H+(aq) + 2Cl–(aq)
The rate of reaction for this reaction is rate = k[Cl2][H2S]
Which of these mechanism is/are consistent with this rate equation ?
A. Cl2 + H2S → H+ + Cl– + Cl+ + HS– (slow)
Cl+ + HS–→ H+ + Cl– + S (fast)
B. H2S ⇔ H+ + HS– (fast equilibrium)
Cl2 + HS– → 2Cl– + H+ + S (slow)
(a) A only
(b) B only
(c) Both A and B
(d) Neither A nor B
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(a) :- The rate equation depends upon the rate determining step. The given rate equation is only consistent with the mechanism A.
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