The empirical formula of a compound is CH. Its molecular weight is 78. Find out its molecular formula.

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Solution

Empirical formula mass of CH = 13 units
Molecular weight = 78
multiplication factor = $\frac{M o l e c u l a r w e i g h t}{E m p i r i c a l f o r m u l a m a s s} = \frac{78}{13} = 6$ Molecular formula = ${(C H)}_{6}$ = $C_{6} H_{6}$

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The empirical formula of a compound is CH. Its molecular weight is 78. Find out its molecular formula.

Empirical formula mass of CH = 13 units Molecular weight = 78 multiplication factor = Molecular weightEmpirical formula mass = 7813 = 6 Molecular formula = (CH)6 = C6H6

Empirical formula mass of CH = 13 units
Molecular weight = 78
multiplication factor = $\frac{M o l e c u l a r w e i g h t}{E m p i r i c a l f o r m u l a m a s s} = \frac{78}{13} = 6$ Molecular formula = ${(C H)}_{6}$ = $C_{6} H_{6}$