wayground logo

Free Printable Worksheets

NEW

Font size

S
M
L
XL
Worksheets

Integrated Rate Law

Total questions: 6

Worksheet time: 2hrs 30mins

Name
Class
Date
1.

The t1/2 for the decomposition of hydrogen iodide, a second order reaction, is 253 seconds. Determine the rate constant if its initial concentration is 0.05 M.

a)

0.08 M-1s-1

b)

0.08 Ms-1

c)

0.04 M-1s-1

d)

0.04 Ms-1

2.

Given: CH3COCH3 + Cl2 -> CH3COCH2Cl + HCl

The given reaction is zero order with respect to Cl2 and first order with respect to CH3COCH3. Determine the concentration of CH3COCH3 after 30 seconds if the initial concentration of CH3COCH3 is 0.025 M and the rate constant at 25 oC is 1.32 x 10-1 s-1.

a)

4.77 x 10-4 M

b)

4.77 x 10-2 M

c)

4.77 x 10-3 M

d)

4.77 x 10-6 M

3.

Given the half-life of a first order reaction is 25 minutes, determine the ratio of the final concentration to its initial concentration after 1 hour.

a)

0.189 : 1

b)

5.28 : 1

c)

0.189 : 5.28

d)

1 : 1

4.

The decomposition of a compound A into its products has a rate constant of 0.083 mol dm-3 min-3 at 380 K. How long will it take for the concentration of A to drop to 1.00 mol dm-3 if at t = 0.0 min [A] is 3.50 mol dm-3.

a)

30.1 minutes

b)

15.1 minutes

c)

43.1 minutes

d)

8.6 minutes

5.

The decomposition of a MM into its products has a rate constant of 0.083 mol dm-3 min-3 at 380 K. Calculate the concentration of MM after 600 seconds it the initial concentration is 3.50 M.

a)

2.67 M

b)

1.53 M

c)

0.90 M

d)

3.33 M

6.

At 180 oC, the decomposition of a gaseous compound XO2 has the half-life of 38.6 min and its half-life is not affected by the change in the pressure of XO2. The initial pressure of XO2 is 372.5 kPa. What is the rate of decomposition of XO2?

a)

6.71 kPa/min

b)

6.71 min-1

c)

6.71 kPa-1min-1

d)

6.71 kPa-1min