3. The decomposition of hydrogen peroxide in dilute sodium hydroxide solution is :2 H2O2(ag)→ 2 H20(1) + O2(g)The reaction is first order in H202, the rate constant for the consumption of H202 at 20°C is 1.8 x 10 5s-1,and the initial concentration of H202 is 0.30 M.a. What is the concentration of H2O2 after 4 hours?b. How long will it take for the H202 concentration to drop to 0.12M?c. How long will it take for 90% of the H202 to decompose?

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3. The decomposition of hydrogen peroxide in dilute sodium hydroxide solution is : 2 H2O2(ag) 2 H20(1) + O2(g) →

Chemistry

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ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

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Chapter1: Chemical Foundations

Section: Chapter Questions

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3. The decomposition of hydrogen peroxide in dilute sodium hydroxide solution is :
2 H2O2(ag)
→ 2 H20(1) + O2(g)
The reaction is first order in H202, the rate constant for the consumption of H202 at 20°C is 1.8 x 10 5s-1,
and the initial concentration of H202 is 0.30 M.
a. What is the concentration of H2O2 after 4 hours?
b. How long will it take for the H202 concentration to drop to 0.12M?
c. How long will it take for 90% of the H202 to decompose?

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