PYQ Vault

Compressibility factor Z = PV/nRT: its formula, its value, or the real molar volume

This type of question, asked 5 times: 4 May 2023 S2, 10 May 2024 S2, 11 May 2024 S1, 20 Apr 2025 S1, 15 Apr 2026 S1. All 5 questions below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    4 May 2023 S2

    73
    Which of the following formula is used to calculate compressibility factor?

    Tap an option to check your answer.

  2. Question 2

    10 May 2024 S2

    81
    What is the volume of 1 mole real gas at STP (V0=22.4 dm3)(V_0=22.4\,\text{dm}^3). If compressibility factor of real gas is 1.1 at STP?

    Tap an option to check your answer.

  3. Question 3

    11 May 2024 S1

    92
    Which of the following formulae is used to determine compressibility factor for measurement of deviation from ideal behaviour?

    Tap an option to check your answer.

  4. Question 4

    20 Apr 2025 S1

    75
    If compressibility factor of real gas is 1.05 at STP. What is molar volume of real gas?

    Tap an option to check your answer.

  5. Question 5

    15 Apr 2026 S1

    6
    Calculate the compressibility factor of 11 mole of a certain real gas if it occupies 0.4 dm30.4\ \mathrm{dm^3} at 300300 K and 4040 atm. [R =0.082= 0.082 atm dm3 K−1 mol−1\mathrm{dm^3\,K^{-1}\,mol^{-1}}]

    Tap an option to check your answer.