On igniting a mixture of acetylene $[C_{2} H_{2}]$ and oxygen, $200 c m^{3}$ of $C O_{2}$ is collected at S.T.P. The volume of acetylene at S.T.P originally is:

100 c m^{3}

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250 c m^{3}

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200 c m^{3}

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50 c m^{3}

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Solution

The correct option is A $100 c m^{3}$
Reaction:
$2 C_{2} H_{2} + 5 O_{2} ⟶ 4 C O_{2} + 2 H_{2} O$
$2$ $5$ $4$
$2$ vol $5$ vol $4$ vol
$2$ volumes of acetylene gives $4$ volumes of carbon dioxide.
So $100$ volumes of acetylene will give $200$ volumes of carbon dioxide.

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Similar questions

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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On igniting a mixture of acetylene [C2H2] and oxygen, 200cm3of CO2 is collected at S.T.P. The volume of acetylene at S.T.P originally is:

The correct option is A 100cm3Reaction:2C2H2+5O2⟶4CO2+2H2O 2 5 4 2 vol 5 vol 4 vol2 volumes of acetylene gives 4 volumes of carbon dioxide. So 100 volumes of acetylene will give 200 volumes of carbon dioxide.

On igniting a mixture of acetylene $[C_{2} H_{2}]$ and oxygen, $200 c m^{3}$ of $C O_{2}$ is collected at S.T.P. The volume of acetylene at S.T.P originally is:

The correct option is A $100 c m^{3}$
Reaction:
$2 C_{2} H_{2} + 5 O_{2} ⟶ 4 C O_{2} + 2 H_{2} O$
$2$ $5$ $4$
$2$ vol $5$ vol $4$ vol
$2$ volumes of acetylene gives $4$ volumes of carbon dioxide.
So $100$ volumes of acetylene will give $200$ volumes of carbon dioxide.