Calculate the volume of CO2 evolved by the combustion of 50 ml of a mixture containing 40 per C2H4 and 60 per CH4 (by volume).

Engineering

Chemistry

Eudiometry

Question

Calculate the volume of CO₂ evolved by the combustion of 50 ml of a mixture containing 40 per C₂H₄ and 60 per CH₄ (by volume).

70 ml

75 ml

80 ml

82 ml

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The volume of C₂H₄ in 50 ml of sample is $50 ml \times \frac{40}{100} = 20 ml$

The volume of CH₄ in 50 ml of sample is $50 ml \times \frac{60}{100} = 30 ml$ .

$\underset{30 ml}{{CH}_{4}} \to \underset{30 ml}{{CO}_{2}} + \underset{60 ml}{2 H_{2} O}$

$\underset{20 ml}{C_{2} H_{4}} \to \underset{40}{2 {CO}_{2}} + \underset{40 ml}{2 H_{2} O}$

The volume of carbon dioxide formed is 30ml + 40ml =70ml.