ICSE Class 10 Answered

2H₂    +  O₂ → 2H₂O

30ml      15ml

2CO+ O₂ → 2CO₂

30ml    15ml

According to stoichiometry from the chemical equations,

H₂ and O₂ reacts in 2:1 ratio.

and CO and O₂ also reacts in 2:1 ratio.

So, 15ml of O₂ will react with H₂ and 15ml of O₂ will react with CO.

According to stoichiometry,

2V of H₂ produces = 2V of H₂O

So, 30ml of H₂  will produce= 30 ml of H₂O

Similarly, CO₂ produced= 30ml

So, in final mixture volume of gases(CO₂+H₂O)-

Volume of CO₂ =30 ml

Volume of H₂O= 30ml

Ratio=30:30=1:1