The molecular formula of a compound whose empirical formula is $C H_{2} O$ and vapour density is 30 is

C_{4} H_{6} O_{2}

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C H_{2} O

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C_{2} H_{4} O_{2}

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C_{2} H_{4} O_{4}

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Solution

The correct option is B $C_{2} H_{4} O_{2}$
As we know,
molar mass $= 2 \times v a p o u r d e n s i t y$
$= 2 \times 30 = 60 g m$
Empirical formula mass $= 12 + 2 + 16 = 30$
Molecular formula $2 \times (C H_{2} O) = C_{2} H_{4} O_{2}$

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The molecular formula of a compound whose empirical formula is CH2O and vapour density is 30 is

The correct option is B C2H4O2As we know,molar mass =2×vapour density=2×30=60gmEmpirical formula mass =12+2+16=30Molecular formula 2×(CH2O)=C2H4O2

The molecular formula of a compound whose empirical formula is $C H_{2} O$ and vapour density is 30 is

The correct option is B $C_{2} H_{4} O_{2}$
As we know,
molar mass $= 2 \times v a p o u r d e n s i t y$
$= 2 \times 30 = 60 g m$
Empirical formula mass $= 12 + 2 + 16 = 30$
Molecular formula $2 \times (C H_{2} O) = C_{2} H_{4} O_{2}$