Two vessel of capacity 1-5 litre and 2 litre contain hydrogen gas and oxygen gas respectively under a pressure of 750mm nbsp-and 100mm- The gases are mixed together in a 5 litre vessel- What will be the final pressure mixture- nbsp-

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Standard X

Chemistry

Molecular Mass

two vessel of...

Question

two vessel of capacity 1.5 litre and 2 litre contain hydrogen gas and oxygen gas respectively under a pressure of 750mm and 100mm. The gases are mixed together in a 5 litre vessel. What will be the final pressure mixture?

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Solution

Let us assume that both vessels were at same temperature T and they were mixed at this same temperature T.
Let us assume that moles of hydrogen and oxygen gas are n₁ and n₂ .

$n_{1} = \frac{750 \times 1.5}{R T} and n_{2} = \frac{100 \times 2}{R T}$
and finally when mixed in a 5L vessel, let new pressure be P.

$P \times 5 = (n_{1} + n_{2}) R T$
On solving, P = 275 mm.

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