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An acid-catalyzed reaction that is first-order in H+ has a rate of 5.0 × 10–6 M s-1 when carried outKinetics Chemistry Question

Question

An acid-catalyzed reaction that is first-order in H+ has a rate of 5.0 × 10–6 M s-1 when carried out in a buffer with pH = 5.0. What is the rate when the reaction is carried out with all reactant concentrations the same, but with the pH buffered at 5.5?

A.

1.6 × 10–6 M s–1

✓ Correct
B.

4.5 × 10–6 M s–1

C.

5.5 × 10–6 M s–1

D.

1.6 × 10–5 M s–1

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