MCAT General Chemistry Question 277: Answer and Explanation

Home > MCAT Test > MCAT general chemistry practice tests

Test Information

Use your browser's back button to return to your test results.
Do more MCAT general chemistry practice tests.

Question: 277

3. If separately synthesized Na⁺[O₂NNH^-] were added to a reaction in progress (assuming total solubility of the salt), what effect would this have on the rate?

A. No reaction would be observed.
B. The rate of the reaction would decrease.
C. The rate of the reaction would increase.
D. It is impossible to tell without experimental data.

Correct Answer: C

Explanation:

C Recall that re-writing the rate law in terms of observable starting conditions does not make the rate including [O₂NNH^-] invalid. The two rate laws are equivalent to one another. As such, increasing the concentration of [O₂NNH^-] will increase the reaction rate.

Previous Next