0.765 g of an acid gives 0.535 g of CO 2 and 0.138 g of H 2 O . Then the ratio of the percentage of carbon and hydrogen is

Question

0.765 g of an acid gives 0.535 g 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) 70: 17 (D) 1: 7

Tardigrade Admin · Accepted Answer

Percentage of carbon =(12/44) × (0.535/0.765) × 100=19 % Percentage of hydrogen =(2/18) × (0.138/0.765) × 100=2 % Percentage of C: Percentage of H=19: 2

Q. $0.765 g$ of an acid gives $0.535 g$ of $C O_{2}$ and $0.138 g$ of $H_{2} O .$ Then the ratio of the percentage of carbon and hydrogen is

19 : 2

18 : 11

70 : 17

1 : 7

Percentage of carbon $= \frac{12}{44} \times \frac{0.535}{0.765} \times 100 = 19%$

Percentage of hydrogen $= \frac{2}{18} \times \frac{0.138}{0.765} \times 100 = 2%$

Percentage of $C :$ Percentage of $H = 19 : 2$

Q. 0.765g of an acid gives 0.535g of CO2​ and 0.138g of H2​O. Then the ratio of the percentage of carbon and hydrogen is