Q.
The empirical formula of a compound is CH2. One mole of this compound has a mass of 42 g. lts molecular formula is
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a
C3H6
b
C3H8
c
CH2
d
C2H2
answer is A.
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Detailed Solution
Weight of empirical formula,CH2=12+(1×2)=12+2=14Mass of one mole of the compound = its molecular weight = 42n= Mol. wt. Empirical formula wt. =4214=3∴ Mol. formula =( empirical formula )×n=CH2×3=C3H6
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