Q. The empirical formula of an acid is $CH_{2}O_{2}$, the probable molecular formula of the acid may be
A) $C_{2}H_{4}O_{2}$
B) $C_{3}H_{6}O_{4}$
C) $C_{2}H_{2}O_{4}$
D) $CH_{2}O_{2}$
Explanation
(d)
Empirical formula of acid $= CH_{2}O_{2}$
We know that molecular formula $= n$ (empirical formula)
If $n = 1$ molecular formula $= \left( CH_{2}O_{2} \right)_{1} = CH_{2}O_{2}$
If $n = 2$ molecular formula $= \left( CH_{2}O_{2} \right)_{2} = C_{2}H_{4}O_{4}$
If $n = 3$ molecular formula $= \left( CH_{2}O_{2} \right)_{3} = C_{3}H_{6}O_{6}$
Thus, the probable molecular formula $= CH_{2}O_{2}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.