Question

26. 0.2 g of an organic compound on compl-
ete combustion produces 0.18 g of water,
then the percentage of hydrogen in it is
(C.E.T)
1) 5 2) 10 3) 15 4) 20​

Answer 1

Answer:

2

Explanation:

Answer 2

Answer:

10%

Explanation:

Mass of water produced = 0.18 g

Molar mass of water, H2O = (1 x 2) + 16 = 18 g/mole

Mass of hydrogen in 18 g (1 mole) of H2O = 1 x 2 = 2 g

So, mass of hydrogen in 0.18 g of H2O = (0.18 x 2)/18 = 0.02 g

Mass of the compound (given) = 0.2 g

Percentage of hydrogen in the compound = (0.02/0.2) x 100 = 10% (answer)