When Potassium Superoxide () and Sodium Peroxide () are individually treated with excess water, they both undergo hydrolysis. Which of the following gases is evolved in these reactions?

Question

When Potassium Superoxide ($KO_2$) and Sodium Peroxide ($Na_2O_2$) are individually treated with excess water, they both undergo hydrolysis. Which of the following gases is evolved in these reactions?

Prashant Kotian · Accepted Answer

Correct answer: A. Hydrolysis of a peroxide () yields hydrogen peroxide but no gas directly at room temperature. Hydrolysis of a superoxide () yields hydrogen peroxide AND liberates oxygen gas.

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