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The reaction A -> B + C is known to be zero order in A with...

The reaction A -> B + C is known to be zero order in A with a rate constant of 3.8 x 10–2 mol/L • s at 25° C. An experiment was run at 25°C where [A]0 = 2.2 x 10–3 M. What is the rate after 6.8 minutes?

A) 3.8  10–2 mol/L • s

B) 1.5  10–11 mol/L • s

C) 8.1  10–4 mol/L • s

D) 2.2  10–3 mol/L • s

E) 8.4  10–5 mol/L • s

I know the answer is A but I would like a detail solution.

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Answer #2

The rate equation for a zero-order reaction is expressed as, rate = k, where, k is the rate constant; k= 3.8 x 10–2 mol/L • s at 25° C in the given reaction.

The given reaction is zero order in A which indicates that the rate is independent of the concentration of A at any time on the course of the reaction. Therefore, while the experiment was run at 25°C where [A]0 = 2.2 x 10–3 M, The rate after 6.8 minutes was same to that of the rate constant for the given equation, i.e., 3.8 x 10–2 mol/L • s.

answered by: anonymous
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