20ml each of oxygen and hydrogen and 10ml of carbon monoxide are exploded in a enclosure What will be the volume and composition of the gases when they are cooled to room temperature and pressure

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Solution

2H₂+ O₂ → 2H₂O

2 V1 Vnil

2CO+ O₂ → 2CO₂

2 V1 V2 V

From equations, 2V of H₂ reacts with = 1 V of O₂

Hence, 20 ml of H₂ will react with = 10 ml of O₂

So, remaining O₂ is 20 - 10= 10 ml

Similarly for 10 ml of CO, the oxygen required is = 5ml

So, remaining O₂ is 10 - 5 = 5 ml

∴ The composition of resulting mixture will be 5 ml of O₂and 10 ml of CO₂.

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