JEE Main levelSingle correct optionDifficulty 2 of 3si180
In a Liebig combustion, 0.215 g of an organic compound gave 0.102 g of HX2O and 0.352 g of COX2. Using H = 1, C = 12, O = 16, the percentage of hydrogen in the compound is
A426.98%
B5.93%
C2.64%
D5.27%
Answer: D
All hydrogen of the sample ends up in water: mass of H = 182×0.102=0.01133 g. Percentage H = 0.2150.01133×100=5.27%.