Q6 / 150 · MHT CET 2026 (15 April Shift 1) · Chemistry

Calculate the compressibility factor of $1$ mole of a certain real gas if it occupies $0.4 \text{ dm}^3$ at $300$ K and $40$ atm. [R $= 0.082$ atm $\text{dm}^3 \text{K}^{-1}\text{mol}^{-1}$]

  • A
    $0.45$
  • Correct answer
    B
    $0.65$
  • C
    $0.85$
  • D
    $1.00$

Solution

The compressibility factor $Z$ is given by the formula:

$Z = \dfrac{PV}{nRT}$

Substituting the given values:

$Z = \dfrac{40 \times 0.4}{1 \times 0.082 \times 300}$

$Z = \dfrac{16}{24.6}$

$Z \approx 0.65$

Answer: $0.65$

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

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