ICSE Class 10 Chemistry 2015 Solved Paper

Complete the following calculations. Show working for complete credit :

Question : 12 of 85

Marks: +1, -0

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:

\table {\H}_2,+ ,{\Cl}_2, →, 2 {\HCl};1, : ,1, : ,2

1 {\vol}

. of

{\Cl}_2

combine with

1 {\vol}

. of

{\H}_2

Then

4 l

{\Cl}_2

combine with

4 l

{\H}_2

Vol. of

{\H}_2=6 l

∵

Vol. of residual gas

=6-4

=2 l

{\H}_2

in the residual gas.

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