Q29 / 100 · BITSAT 2024 (Memory Based Paper 2) · Chemistry

1 L closed flask contains a mixture of 4 g of methane and 4.4 g of carbon dioxide. The pressure inside the flask at $27^{\circ} \mathrm{C}$ is [Assume ideal behaviour of gases]

  • Correct answer
    A
    8.6 atm
  • B
    2.2 atm
  • C
    4.2 atm
  • D
    6.1 atm

Solution

no. of moles of $\mathrm{CH}_4\left(\mathrm{n}_1\right)=\frac{4}{16}=0.25 \mathrm{~mol}$ no. of moles of $\mathrm{CO}_2\left(\mathrm{n}_2\right)=\frac{4.4}{44}=0.1 \mathrm{~mol}$ Total no. of moles $\left(\mathrm{n}_{\mathrm{T}}\right)=\mathrm{n}_1+\mathrm{n}_2=0.35 \mathrm{~mol}$ $\therefore \quad P=\frac{0.35 \times 0.082 \times 300}{1}=8.6 \mathrm{~atm}$

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

Relevant Questions