A gaseous hydrocarbon contains 82.76 % of carbon. Given that its vapour density is 29 , find its molecular formula. [ C = 12 , H = 1 ]

ICSE Class 10 Chemistry 2016 Solved Paper

Question : 62

Total: 85

A gaseous hydrocarbon contains 82.76% of carbon. Given that its vapour density is 29 , find its molecular formula. [C=12,H=1]

Solution:

Volume of molecule
‌=‌

‌ No. of molecules ‌

×‌ Molar Volume ‌
‌=‌

12×1024

6×1023×22.4

‌=2×10×22.4
‌=448‌ litres. ‌

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