The number of oxygen atoms used in the combustion of $1$ molecule of ethanol is:

3

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1

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32

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6

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Solution

The correct option is D $6$
Balanced equation for combustion of ethanol can be written as:
$C_{2} H_{5} O H + 3 O_{2} \to 2 C O_{2} + 3 H_{2} O$
Since for combustion of $1$ molecule of ethanol, $3$ molecules of oxygen are required. Hence $6$ atoms of oxygen are comsumed.

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Similar questions

1

Statement I- Atomicity of oxygen molecule is 1.
Statement II- Atomicity is the total number of atoms present in a molecule.

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