Chemistry skill

Solve problems relating to the rate law

With this skill you will learn

Establish the order of a reaction using initial rates
Use the rate law to find the value of k
Use the rate law to find the rate of reaction

Solve problems relating to the rate law Questions

Questions that need this skill to solve them

OC user

in Chemistry·

1 Sep 2020

The initial rate of the reaction A+B→C+D is determined for different inital conditions, with the results listed below.

Expt	[A], M	[B], M	Initial Rate Ms^-1
1	0.185	0.133	3.35 x 10^-4
2	0.185	0.266	1.35 x 10^-3
3	0.370	0.133	6.75 x 10^-4
4	0.370	0.266	2.70 x 10^-3

What is the overall reaction order?

OC user

in Chemistry·

1 Sep 2020

The initial rate of the reaction A+B→C+D is determined for different inital conditions, with the results listed below.

Expt	[A], M	[B], M	Initial Rate Ms^-1
1	0.185	0.133	3.35 x 10^-4
2	0.185	0.266	1.35 x 10^-3
3	0.370	0.133	6.75 x 10^-4
4	0.370	0.266	2.70 x 10^-3

What is the value of the rate constant, k?

OC user

in Chemistry·

1 Sep 2020

The initial rate of the reaction A+B→C+D is determined for different inital conditions, with the results listed below.

Expt	[A], M	[B], M	Initial Rate Ms^-1
1	0.185	0.133	3.35 x 10^-4
2	0.185	0.266	1.35 x 10^-3
3	0.370	0.133	6.75 x 10^-4
4	0.370	0.266	2.70 x 10^-3
5	0.421	0.671

What is the initial rate for condition 5?

OC user

in Chemistry·

1 Sep 2020

The table below are the results for the reaction 2NO(g) + Cl₂(g) → 2NOCl(g).

Expt	[NO], M	[Cl₂], M	Initial Rate Ms^-1
1	0.10	0.10	0.18
2	0.10	0.20	0.36
3	0.20	0.10	1.45

What is the overall reaction order?

OC user

in Chemistry·

1 Sep 2020

The table below are the results for the reaction 2NO(g) + Cl₂(g) → 2NOCl(g).

Expt	[NO], M	[Cl₂], M	Initial Rate Ms^-1
1	0.10	0.10	0.18
2	0.10	0.20	0.36
3	0.20	0.10	1.45

What is the rate law?

OC user

in Chemistry·

1 Sep 2020

The table below are the results for the reaction 2NO(g) + Cl₂(g) → 2NOCl(g).

Expt	[NO], M	[Cl₂], M	Initial Rate Ms^-1
1	0.10	0.10	0.18
2	0.10	0.20	0.36
3	0.20	0.10	1.45

What is the rate constant?

OC user

in Chemistry·

1 Sep 2020

The table below are the results for the reaction 2I^-(aq) + S₂O₈^-(aq)→ I₂(aq) + 2SO₄^2-(aq).

Expt	[I^-], M	[S₂O₈-], M	Initial Rate Ms^-1
1	0.080	0.040	18.4 x 10^-6
2	0.040	0.040	9.2 x 10^-6
3	0.080	0.020	4.60 x 10^-6

What is the overall reaction order?

OC user

in Chemistry·

1 Sep 2020

The table below are the results for the reaction 2I^-(aq) + S₂O₈^-(aq)→ I₂(aq) + 2SO₄^2-(aq).

Expt	[I^-], M	[S₂O₈-], M	Initial Rate Ms^-1
1	0.080	0.040	18.4 x 10^-6
2	0.040	0.040	9.2 x 10^-6
3	0.080	0.020	4.60 x 10^-6
4	0.378	0.125

What is the initial rate for condition 4?

OC user

in Chemistry·

1 Sep 2020

The table below are the results for the reaction 2N₂O₅(g) → 4NO₂(g) + O₂(g)

Expt	N₂O₅(M)	Initial Rate Ms^-1
1	0.0750	8.90 x 10^-4
2	0.190	2.26 x 10^-3
3	0.275	3.26 x 10^-3
4	0.410	4.85 x 10^-3

What is the overall reaction order?

OC user

in Chemistry·

1 Sep 2020

The table below are the results for the reaction 2N₂O₅(g) → 4NO₂(g) + O₂(g)

Expt	N₂O₅(M)	Initial Rate Ms^-1
1	0.0750	8.90 x 10^-4
2	0.190	2.26 x 10^-3
3	0.275	3.26 x 10^-3
4	0.410	4.85 x 10^-3

What is the rate law?

OC user

in Chemistry·

1 Sep 2020

The table below are the results for the reaction 2N₂O₅(g) → 4NO₂(g) + O₂(g)

Expt	N₂O₅(M)	Initial Rate Ms^-1
1	0.075	8.90 x 10^-4
2	0.190	2.26 x 10^-3
3	0.275	3.26 x 10^-3
4	0.410	4.85 x 10^-3

What is the inital rate when N₂O₅ is 0.026M?

OC user

in Chemistry·

1 Sep 2020

The table below are the results for the reaction 2I^-(aq) + S₂O₈^-(aq)→ I₂(aq) + 2SO₄^2-(aq).

Expt	[I^-], M	[S₂O₈-], M	Initial Rate Ms^-1
1	0.080	0.040	18.4 x 10^-6
2	0.040	0.040	9.2 x 10^-6
3	0.080	0.020

What is the initial rate of experiment 3 if S₂O₈ is zero order?

OC user

in Chemistry·

1 Sep 2020

The table below are the results for the reaction 2I^-(aq) + S₂O₈^-(aq)→ I₂(aq) + 2SO₄^2-(aq).

Expt	[I^-], M	[S₂O₈-], M	Initial Rate Ms^-1
1	0.080	0.040	18.4 x 10^-6
2	0.040	0.040	9.2 x 10^-6
3	0.080	0.020

What is the initial rate of experiment 3 if S₂O₈ is first order?

OC user

in Chemistry·

1 Sep 2020

The table below are the results for the reaction 2I^-(aq) + S₂O₈^-(aq)→ I₂(aq) + 2SO₄^2-(aq).

Expt	[I^-], M	[S₂O₈-], M	Initial Rate Ms^-1
1	0.080	0.040	18.4 x 10^-6
2	0.040	0.040	9.2 x 10^-6
3	0.080	0.020
4	0.160	0.020

What is the initial rate of experiment 4 if S₂O₈ is first order?

OC user

in Chemistry·

1 Sep 2020

The table below are the results for the reaction 2I^-(aq) + S₂O₈^-(aq)→ I₂(aq) + 2SO₄^2-(aq).

Expt	[I^-], M	[S₂O₈-], M	Initial Rate Ms^-1
1	0.080	0.040	18.4 x 10^-6
2	0.040	0.040	9.2 x 10^-6
3	0.080	0.020
4	0.160	0.020

What is the initial rate of experiment 4 if S₂O₈ is zero order?

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Solve problems relating to the rate law

With this skill you will learn