Q. An organic compound contains 78% (by wt.) carbon and remaining percentage of hydrogen. The right option for the empirical formula of this compound is: [Atomic wt. of C is 12, H is 1]
A) $CH_2$
B) $CH_3$
C) $CH_4$
D) CH
Explanation
[Solution] C : H = 78/12 : 22/1 = 6.5 : 22 = 1 : 3.38, approximately 1 : 3, so the empirical formula is $CH_3$. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.