1.

If ten volumes of dihydrogen gas reacts with five volumes of dioxygen gas, how many volumes of water vapour would be produced?

Answer»

2H2 (g) + O2 (g) → 2H2O (vapour)

2 vol        1 vol         2 vol

2 volumes of H2 reacts with 1 volume of O2 to produce 2 volumes of water vapour.

10 volumes of dihydrogen gas reacts with 5 volumes of O2 to produce 10 volumes of water vapour.

Water vapour produced = 10 volumes.



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