Fort Chem On-line Quiz - Kinetics

1

For the reaction

3 H2 + N2 ==> 2 NH3

How does the rate of disappearance of H2 compare to the rate of production of NH3?

2

Consider the reaction

S2O8^2- + 3 I - ==> 2 SO4^2- + I3 ñ

Which one of the following rate expressions would give the same value as the rate of disappearance of S2O8^2-?

3

For the reaction

2 A ==> B

the reaction order is

4

For the reaction

2 A + 2 B ==> 3 C

it was determined that the reaction is third power overall. The rate law for this reaction might be


5 What are the units for k, the rate constant, in a first order reaction where the time unit is second(s)?


6 For a reaction, the rate law is rate = k [A]^1[B]^0[C]^1. What are the units for k where the time unit is seconds(s)?


7

What is the rate law for the reaction

A + B ==> 2 C

based on the following kinetic data?

TrialInitial Conc [A]Initial Conc [B]Initial Rate Rxn (mol/L-s)
10.40 0.10 3.5 x10^3
20.20 0.101.8 x10^3
30.200.504.5 x10^4

8

Kinetic data for the following reaction was determined experimentally:

2 NO(g) + Cl2(g) ==> 2 NOCl(g)


TrialInitial Conc [NO]Initial Conc [Cl2]Initial Rate Rxn (mol/L-s)
10.20 0.10 0.63
20.200.305.70
30.80 0.10 2.58
40.40 0.20 ?

Predict an observed rate of reaction for Trial 4.

9 In general, as the temperature increases, the rate of a chemical reaction


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