OnlineCBT
Chemistry · PYQ NEET UG 2021
हिन्दीChoose the CORRECT option for the total pressure (in atm) in a mixture of \( 4\text{ g O}_2 \) and \( 2\text{ g H}_2 \) confined in a total volume of one litre at \( 0\text{ }^\circ\text{C} \). [Given: \( R = 0.082\text{ L atm mol}^{-1}\text{ K}^{-1} \), \( T = 273\text{ K} \)]
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Correct answer · Option B
\( 25.18 \)
Explanation
Moles of O2 = 4/32 = 0.125 mol; Moles of H2 = 2/2 = 1 mol. Total moles = 1.125 mol. Total pressure \( P = \frac{nRT}{V} = \frac{1.125 \times 0.082 \times 273}{1} = 25.18\text{ atm} \).
