Practical Organ...

The percentage of sulphur in the organic compound, when 0.2595 g of a sulphur containing organic compound in a quantitative analysis by Carius method yieded 0.35 g of barium sulphate is

If 0.228 g of silver salt of dibasic acid gave a residue of 0.162 g of silver on ignition, then molecular weight of the acid is

Methyl ketones are usually characterized through

ClCH₂COOH is heated with fuming nitric acid in the presence of AgNO₃ in a Carius tube. After filtration and washing a white precipitate is obtained. The precipitate is

The Lassaigne’s extract is boiled with dil. HNO₃ before testing for halogens because

0.2 g of an organic compound on complete combustion produces 0.18 g of water, then the percentage of hydrogen in the compound is

To determine the weight of a halogen in organic compound, the compound is heated with fuming HNO₃ in presence of

In Lassaigne’s test for nitrogen the blue colour is due to the formation of

An organic compound is found to contain C = 39.9%, H = 6.7%, O = 53.4%. Its empirical formula is

If the percentage of nitrogen in an organic compound is 12.5% then how much of the organic compound should be taken so as to produce 50 ml of N₂ at 300 K and 715 mm pressure (Aquesous tension = 15 mm)?