ICSE Class 10 Chemistry 2017 Solved Paper

A gas cylinder can hold 1‌kg of hydrogen at room temperature and pressure :

Question : 63

Total: 86

What weight of CO2 can the cylinder hold under similar conditions of temperature and pressure ? (H=1,C=12,O=16)

Solution:

At STP, 1 mole of any gas occupies 22.4l . So, at STP, 500 mole of CO2 will occupy the same space as that of hydrogen.
‌ Molar mass of ‌CO2‌=12+32=44g
∴500‌ moles of ‌CO2‌=500×44
‌=22000g
Thus, the cylinder can hold 22‌kg‌CO2 .

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