ICSE Class 10 Chemistry 2015 Solved Paper

Complete the following calculations. Show working for complete credit :

Question : 12

Total: 85

If 6 litres of hydrogen and 4 litres of chlorine are mixed and exploded and if water is added to the gases formed, find the volume of the residual gas.

Solution:

H2	+	Cl2	→	2‌HCl
1	:	1	:	2

If 1‌vol . of Cl2 combine with 1‌vol. of H2
Then 4l of Cl2 combine with 4l of H2
Vol. of H2=6l
∵ Vol. of residual gas =6−4
=2l of H2 in the residual gas.

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