If the empirical formula of two compounds is CH and their Vapour densities are 13 and 39 respectively, find their molecular formula.
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Question

If the empirical formula of two compounds is CH and their Vapour densities are 13 to 39 respectively, find their molecular formula.

KnowledgeBoat · Accepted Answer

Empirical formula is CH Empirical formula weight = 12 + 1 = 13 Vapour density (V.D.) = 13 Molecular weight = 2 x V.D. = 2 x 13 Molecular formula = n[E.F.] = 2[CH] = C₂H₂ Similarly, Empirical formula is CH Empirical formula weight = 12 + 1 = 13 Vapour density (V.D.) = 39 Molecular weight = 2 x V.D. = 2 x 39 Molecular formula = n[E.F.] = 6[CH] = C₆H₆

Chemistry

If the empirical formula of two compounds is CH and their Vapour densities are 13 and 39 respectively, find their molecular formula.

Mole Concept

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