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Ideal Gas Equation

The volume of...

Question

The volume of a gas at pressure 2.1 atm and temperature $27^{\circ}$ C is 83 litres. If R = 8.3 J/mol/K, then the quantity of gas in gm-mole will be

A

15

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B

42

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C

7

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D

14

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Solution

The correct option is C 7
PV = $μ R T \Rightarrow μ = \frac{P V}{R T} = \frac{21 \times 10^{4} \times 83 \times 10^{- 3}}{8.3 \times 300}$ = 7

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