An organic compound has the empirical formula . If 1 mole of the compound weighs , what is its molec — Practical Organic Chemistry and Purification Chemistry Question
Question
An organic compound has the empirical formula $CH_2$. If 1 mole of the compound weighs $42\text{ g}$, what is its molecular formula?
Answer: B
💡 Solution & Explanation
The empirical formula mass of $CH_2$ is 14. The molecular multiplier $n = Molar\ Mass / EFM = 42 / 14 = 3$. Thus, the molecular formula is $(CH_2)_3 = C_3H_6$.
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