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BITSAT 2024Paper 2
Exam
BITSAT
Year
2024
Paper
Paper 2
Subject
Chemistry
Chapter
Some Basic Concepts of Chemistry

BITSAT 2024 · Paper 2 · Chemistry · Some Basic Concepts of Chemistry

1 L closed flask contains a mixture of 4 g of methane and 4.4 g of...

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∘C27^{{}^{\circ}} \mathrm{C} is [Assume ideal behaviour of gases]

Options

  1. A8.6 atm
  2. B2.2 atm
  3. C4.2 atm
  4. D6.1 atm

Correct answer

A. 8.6 atm

Step-by-step solution

no. of moles of CH4(n1)=416=0.25 mol\mathrm{CH}_4\left(\mathrm{n}_1\right)=\frac{4}{16}=0.25 \mathrm{~mol} no. of moles of CO2(n2)=4.444=0.1 mol\mathrm{CO}_2\left(\mathrm{n}_2\right)=\frac{4.4}{44}=0.1 \mathrm{~mol} Total no. of moles (nT)=n1+n2=0.35 mol∴P=0.35×0.082×3001=8.6 atm\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}
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