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Q.

If 10 volume of dihydrogen gas reacts with 5 volume of dioxygen gas, how many volumes of water vapour would be produced ?

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a

5 volume

b

10 volume

c

15 volume

d

52volume

answer is B.

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Detailed Solution

2H2+O2  2H2O

Volume of gas is directly proportional to the number of moles. Given reaction indicates that 2 vol of H2 react with 1 vol of O2 to form 2 vol of water. 

Hence, 10 volumes of dihydrogen react with 5 volume of oxygen to form 10 volumes of water.

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