SATHEE: States of Matter - Result Question 1

States of Matter - Result Question 1

####1. A mixture of $N_{2}$ and Ar gases in a cylinder contains $7 g$ of $N_{2}$ and $8 g$ of Ar. If the total pressure of the mixture of the gases in the cylinder is 27 bar, the partial pressure of $N_{2}$ is: [Use atomic masses (in g mol-1): $N = 14, A r = 40$ ]

(a) 12 bar

(b) 15 bar

(d) 9 bar

[2020]

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Solution:

(b) $n_{N_{2}} = \frac{7}{28} = \frac{1}{4} = 0.25$

$n_{Ar} = \frac{8}{40} = \frac{1}{5} = 0.20$

Now, applying Dalton’s law of partial pressure,

$p_{N_{2}} =$ mole fraction of $N_{2} \cdot P_{Total}$

$\frac{0.25}{0.45} \times 27 = \frac{5}{9} \times 27 = 15$ bar

States of Matter - Result Question 1

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States of Matter - Result Question 1

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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