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Polyhalogen Compounds

What volume o...

Question

What volume of $O_{2}$ is required to burn completely a mixture of $22.4 d m^{3}$ of $C H_{4}$ and $11.2 d m^{3}$ of $H_{2}$ ?
The reactions are:
$C H_{4} + 2 O_{2} \to C O_{2} + 2 H_{2} O$ ;
$2 H_{2} + O_{2} \to 2 H_{2} O$
(All volume at S.T.P).

50.4 L

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100.8 L

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22.4 L

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25.2 L

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Solution

The correct option is A 50.4 L
$C H_{4} + 2 O_{2} \to C O_{2} + 2 H_{2} O$
1 vol 2 vol
22.4 L 44.8 L
$2 H_{2} + O_{2} \to 2 H_{2} O$
2 vol 1 vol
11.2 L 5.6 L
So, total volume of oxygen requires is $44.8 + 5.6 = 50.4 L$ .

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22.4 d m^{3}

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What volume of oxygen is required to burn completely a mixture of 22.4 dm³ of methane and 11.2 dm³ of hydrogen into carbon dioxide and steam?

Equations of the reactions are given below. (Assume that all volumes are measured at STP).

CH₄ + 2O₂ → CO₂ +2H₂O

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20

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O_{2}

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