State the volume occupied by 40 ‌ gm of methane at STP, if its vapour density (V.D.) is 8.

ICSE Class 10 Chemistry 2020 Solved Paper

Question : 69

Total: 86

State the volume occupied by 40‌gm of methane at STP, if its vapour density (V.D.) is 8.

Solution:

Given : V.D. of Methane =8
‌ Molecular mass ‌=‌ V.D. ‌×2=8×2=16
If 16‌gm of CH4 has a volume
=22.4l‌ at STP ‌
Then 40‌gm of CH4 has a volume
‌=‌

22⋅4

×40
‌=56l

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