1. Consider the following reaction: If the rate of change of [A] at a given poin

Question

1. Consider the following reaction: If the rate of change of [A] at a given point in time is -1.0 M/s, what is the rate of change of [C] at that same point in time? a. -1.0 M/s b. +0.67 M/s c. +1.0 M/s d. +1.3 M/s e. -1.3 M/s

2. Consider the rate law: rate = k [A]2 What will the units of k be for this rate law? a.

3.

NO and NOCl2

4.

The rate law for the reaction:

A + 2 B ? C

is:

rate = k[A][B]

If k = 0.318/M*s , and initial concentrations of reactants are: [A] = 0.50 M and [B] = 0.35 M, what will be the initial rate of this reaction?

0.85 M/s

5.

Assume that the following reaction:

2 FClO2 ? 2 FClO + O2

is first order, with a rate constant of k = 0.0114 / s . Given an initial concentration of FClO2 of 0.772 M, what will the FClO2concentration be after 45 seconds? (Hint: ln(A/Ao) = -kt )

Explanation / Answer

In first part you have not mentioned the reaction

2- 1/M*s

3- intermediate is the compound that is made and used up in rection itself it neither appears as product nor reactant ANS-NOCl2

4- simply put values in rate law to get initial rate= 0.05565 M/s

5- putting the values in hint ln(A/0.772) = -0.0114 x 45

ln(A/0.772)=-0.513

ANS A=0.4621 M

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