Some Basic Concepts of Chemistry · Class 11 · CBSE · Science Chemistry

Calculate the volume occupied by 14 text{ g} of nitrogen gas (N2) at STP.

Practice question from Some Basic Concepts of Chemistry (Class 11 · CBSE · Science Chemistry), with the correct answer and a step-by-step solution.

easy · MCQ · Q-2AF815

Calculate the volume occupied by $14 \text{ g}$ of nitrogen gas ( $N_2$ ) at STP.

A. $11.2 \text{ L}$ Correct answer
B. $22.4 \text{ L}$
C. $5.6 \text{ L}$
D. $44.8 \text{ L}$

Solution

Molar mass of $N_2 = 28 \text{ g mol}^{-1}$ . Moles of $N_2 = 14 / 28 = 0.5 \text{ mol}$ . At STP, $1 \text{ mole}$ of gas occupies $22.4 \text{ L}$ . Therefore, volume $= 0.5 \times 22.4 = 11.2 \text{ L}$ .

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