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Suppose that the reaction A + B --> C has a rate law of Rate =...

Suppose that the reaction A + B --> C has a rate law of Rate = k[A][B]. How would the rate of this reaction change if [A] was tripled?

Question 14 options:

rate drops to 1/9th

rate increases x 6

no change in the rate

rate drops to 1/3rd

rate increases to x 9

rate triples

rate drops to 1/6th

more information is needed to make this prediction
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Answer #1

A + B --> C

It has a rate law of Rate = k[A][B].

if [A] was tripled

Rate1 = k[A][B].

Rate2 = k[3A][B].

Rate1/Rate2   = k[A][B]/3 k[A][B]. .

Rate1/Rate2   = 1/3

Rate2            = 3 * Rate1

Rate is triple

rate triples >>>>answer

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