A 20 litre of flask contain 0-2 Mole of Methane- 0-3 Mole of Hydrogen and 0-4 Mole of Nitrogen at 50- C- Calculate the pressure inside the flask-A- 20 atmB- 15 atmC- 11-9 atmD- 1-19 atm

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Standard XII

Chemistry

Mole Fraction

A 20 litre of...

Question

A 20 litre of flask contain 0.2 Mole of Methane, 0.3 Mole of Hydrogen and 0.4 Mole of Nitrogen at $50^{\circ}$ C. Calculate the pressure inside the flask.

20 atm

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15 atm

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11.9 atm

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1.19 atm

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Solution

The correct option is D 1.19 atm
Total number of moles = 0.2 + 0.3 + 0.4
We know that, PV = nRT = 0.9
$∴$ Total pressure of Mixture $(P) = \frac{total number of moles of gases}{V} R T$
$∴$ Pressure inside the flask $(P) = \frac{0.9}{20} \times 0821 \times 32$
= 1.19 atm

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A 20 litre of flask contain 0.2 Mole of Methane, 0.3 Mole of Hydrogen and 0.4 Mole of Nitrogen at 50∘C. Calculate the pressure inside the flask.

The correct option is D 1.19 atmTotal number of moles = 0.2 + 0.3 + 0.4 We know that, PV = nRT = 0.9 ∴ Total pressure of Mixture (P)=total number of moles of gasesVRT ∴ Pressure inside the flask (P)=0.920×0821×32 = 1.19 atm

A 20 litre of flask contain 0.2 Mole of Methane, 0.3 Mole of Hydrogen and 0.4 Mole of Nitrogen at $50^{\circ}$ C. Calculate the pressure inside the flask.

The correct option is D 1.19 atm
Total number of moles = 0.2 + 0.3 + 0.4
We know that, PV = nRT = 0.9
$∴$ Total pressure of Mixture $(P) = \frac{total number of moles of gases}{V} R T$
$∴$ Pressure inside the flask $(P) = \frac{0.9}{20} \times 0821 \times 32$
= 1.19 atm