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Dalton's Law of Partial Pressures

At a given te...

Question

At a given temprature ,density of gas x is twice as that of gas y and molar mass of x is one third of gas y.The ratio of their pressures will be?

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Solution

Density of the gas =(Pressure×Molecularmass) / RT

d=PM / RT
dX / dY= 2
=> PX × MX / PY × MY = 2
PX / PY × 1/3 = 2
∴ PX / PY = 6

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