Q. 0.765g of an acid gives 0.535g of $CO_{2}$ and 0.138 g of $H_{2}O$. Then, the ratio of the percentage of carbon and hydrogen is
A) 19:2
B) 18:11
C) 20:17
D) 1:7
Explanation
(a)
% of C$= \frac{12}{44} \times \frac{0.535}{0.765} \times 100 = 19.07$
$\% of\ H = \frac{2}{18} \times \frac{0.138}{0.765} \times 100 = 2.004$
Ratio of % of C:H=19:2 (approx.)
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.