Q18 / 160 · AP EAMCET 2021 (19 Aug Shift 1) · Chemistry

Which metal oxide among the following gives $H_{2} O_{2}$ on treatment with dilute acid?

Solution

The oxide that gives $H_{2} O_{2}$ on treatment with dilute acid is ${BaO}_{2}$ because ${BaO}_{2}$ contains superoxide ions

When barium superoxide is treated with dilute acid then it gives oxide and hydrogen peroxide

${BaO}_{2} + H_{2} {SO}_{4} \to {BaSO}_{4} + H_{2} O_{2}$

Hence, the correct answer is option: 'A'.