Q5 / 150 · MHT CET 2024 (15 May Shift 2) · Chemistry

What is the volume occupied by 2.5 mol of ammonia gas at STP?

  • A
    $22.4 \mathrm{dm}^3$
  • B
    $25.0 \mathrm{dm}^3$
  • C
    $33.6 \mathrm{dm}^3$
  • Correct answer
    D
    $56.0 \mathrm{dm}^3$

Solution

1 mole ammonia at STP occupies $22.4 \mathrm{dm}^3$ $\begin{aligned} \therefore \quad 2.5 \text { mole occupies } 2.5 \mathrm{~mol} \times & 22.4 \mathrm{dm}^3 \mathrm{~mol}^{-1} \\ & =56.0 \mathrm{dm}^3 \end{aligned}$

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

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