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 percentage of carbon and hydrogen is

Step-by-step solution

% for CO 2 ∵   0 . 765   g of acid gives CO 2 = 0 . 535   g ∴ 100   g of acid gives CO 2 = 0 . 535 × 100 0 . 765 % of CO 2 = 70 . 00 % for carbon ∵   44   g of CO 2 gives, C = 12   g ∴   70   g of CO 2 gives, C = 12 × 70 44 = 19 . 09   g ∴   % of carbon = 19 . 00 Similarly, (i) for hydrogen % of H 2 O ⇒   0 . 138 × 100 0 . 765 = 18 . 03 = 18 . 00 % of Hydrogen ⇒   2 × 18 18 = 2 . 00 Hence r