What volume fo oxygen would be required to burn completely 400 ml. of acetylene $[C_{2} H_{2}]$ Also, calculated the volume fo carbon dioxide formed.
$2 C_{2} H_{2} + 50_{2} \to 4 C O_{2} + 2 H_{2} O (l)$

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Solution

The volume of oxygen required to burn completely 400 ml of acetylene and the volume of carbon dioxide formed-

2 ml of $C_{2} H_{2}$ requires 5 ml of oxygen.

400 ml of $C_{2} H_{2}$ requires $\frac{5}{2} \times 400$ = 1000 ml of oxygen

2 ml of $C_{2} H_{2}$ burns to form 4 ml of $C O_{2}$

400 ml of $C_{2} H_{2}$ will form 800 ml of $C O_{2}$

1000 ml of oxygen is required and 800 ml of carbon dioxide is formed.

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What volume of oxygen at STP is required to effect complete combustion of 200cm³ of acetylene and what would be the volume of carbon dioxide formed?

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