Given the following proposed mechanism. Predict the rate law for the overall rea

Question

Given the following proposed mechanism. Predict the rate law for the overall reaction A_2 + 2B rightarrow 2AB (overall reaction) Mechanism A_2 rightleftharpoons 2A fast A + B rightarrow AB slow A solution contains 0.036 M Cu^2+ and 0.044 M Fe^2+. A solution containing sulfide ions is added to selectively precipitate one of the metal ions from solution. At what concentration of sulfide ion will a precipitate begin to form, and what is the identity of the precipitate? K_sp(CuS) = 1.3 times 10^-36, K_sp(FeS) = 6.3 times 10^-18

Explanation / Answer

23) The slowest step is the rate determining step.

The slowest step is A+B----->AB

In this step there is one mole of reactant B so the order of the reaction with respect to B is 1 & there is no other reactant A2

So the rate law is r= k[B]

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