Question

3) A 0.360 8 sample of an organic compound con burnt in excess oxygen. When the gases evolved mass increased by 0.216 g. The remaining gases, when mcreased its mass by 0.528 g. The mass of oxygen in the sample 15. Solution: an organic compound containing carbon, hydrogen and oxygen was When the gases evolved were passed through anhydrous CaCl2 its 16 8. The remaining gases, when bubbled through a NaOH solution,

Answer 1

We assume that call the hydrogen. in the sample gets converted to Mo which is then absorbed by each 0. 216g H₂O We have żg H. en 18 g H₂O - 0.2 16 g H₂O will have 2 x 0 216 g H₂ 44 w = 0.024g ₂ gas Sumilasy cz gels absorbed into Naoh solution - 0.528 g CO₂ We have 12g C in 44 g (0, 0.528 g (Or will have 12 X 0 5 28 g Carbon 30.144g c tatal mars of sample = mass of ct mais of Ht mars of 2 0:360g = 0.0247 0.144 ut mass of a mass of 0, 0.360g - 0.1689 - 0.192 g