If ten volumes of dihydrogen gas react with five volumes of dioxygen gas, how many volumes of water vapour would be produced?
The reaction of hydrogen with oxygen is given as below:
2H2 + O2→ 2H2O
By referring to above equation, 2 volumes of hydrogen and 1 volume of oxygen react together to form 2 volumes of water.
So if 10 volumes of hydrogen react with 5 volumes of oxygen then 10 volumes of water is produced.