Q19 / 90 · JEE Main 2023 (25 Jan Shift 1) · Chemistry

' $25$ volume' hydrogen peroxide means

Solution

$25$ volumes' $H_{2} O_{2}$ means: $1 L$ of $H_{2} O_{2}$ on decomposition give $25 L$ of $O_{2}$ (g) at $STP$ .

$2 H_{2} O_{2} (l) \to 2 H_{2} O (l) + O_{2} (g) 2 [\frac{25}{22.4}] mole [\frac{25}{22.4}] mole$

Mass of $H_{2} O_{2}$ = $\frac{2 \times 25}{22.4} \times 34 = 75 gram$

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