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