1. The rate law for a generic reaction is rate = k[A] 2 [B]. This rate law is va

Question

1. The rate law for a generic reaction is rate = k[A]2[B]. This rate law is valid .... (choose all that apply)

for any temperature at which the reaction is performed.

with any concentrations of reactants.

for any reaction that contains A and B.

only under specific temperature and concentration conditions.

2. Why does the rate of a reaction generally increase with increased temperature? (Choose all that apply)

at higher temperatures, molecules are more likely to collide with each other in the correct orientation.

at higher temperatures, molecules will collide more often.

at higher temperatures, the potential energy difference between reactants and products is smaller.

at higher temperatures, more of the collisions will have the required activation energy.

3.

The value of the rate constant for a reaction (k) is a constant ... (choose all that apply)

If you choose A, do not choose B.

If you choose B, do not choose A.

If you choose C, do not choose D.

If you choose D, do not choose C.

for a given reaction at a given temperature.

for a given reaction at any temperature.

for a given reaction with specific concentrations.

for a given reaction with any concentrations.

for any temperature at which the reaction is performed.

with any concentrations of reactants.

for any reaction that contains A and B.

only under specific temperature and concentration conditions.

Explanation / Answer

1.

A. True

B. True (rate law is applicable for any concentration of the reactants which appears in the rate law)

C. False (present of other reactants will change the rate law)

D. False

2.

A. False

B. True

C. False

D. True

3.

A. True

B. False

C. False

D. True

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