Some Basic Principles Of Organic Chemistry Question 60
Question: 0.24 g of an organic compound gave 0.22 g $ CO_2 $ on complete combustion. If it contains 1.66 % hydrogen, then the percentage of C and O will be [MP PET 1986]
Options:
A) 12.5 and 36.6
B) 25 and 75
C) 25 and 36.6
D) 25 and 80
Show Answer
Answer:
Correct Answer: B
Solution:
% of C = $ \frac{12}{44}\times \frac{\text{Mass of }CO_2}{\text{Mass of substance}}\times 100 $ = $ \frac{12\times 0.22}{44\times 0.24}\times 100 $ = 25; C = 25, H = 1.66 Total = 26.6 = 100 - 26.6 = 73.4.
