Single Choice

Quantitative estimation of $$C$$, $$H$$ and extra elements (e.g.$$ N$$,$$S$$, $$P$$ and halogens) is carried out by Liebig’s combustion, Carius, Dumas, and Kjeldahl’s method. Carius method is used for the quantitative estimation of:

A$$C$$ and $$H$$
BHalogens, $$S$$ and $$P$$
Correct Answer
C$$N$$
DAll

Solution

The Carius halogen method in analytical chemistry is a method for the quantitative determination of halogens in chemical substances.

A known mass of an organic compound is heated with fuming nitric acid in the presence of silver nitrate contained in a hard glass tube known as Carius tube, in a furnace. Carbon and hydrogen present in the compound are oxidised to carbon dioxide and water. The halogen present forms the corresponding silver halide (AgX). It is filtered, washed, dried and weighed.

This chemical test works equally well for the determination of sulfur but without the addition of silver nitrate. The sulfuric acid intermediate formed after reaction of sulfur with fuming nitric acid forms insoluble barium sulfate on the addition of barium chloride.

Hence, option B is correct.

SIMILAR QUESTIONS

Organic Chemistry

In Carius method halogens are estimated as:

Organic Chemistry

0.301 g of an organic compound gave 0.282 g of AgBr by carius method. The % of Br is:

Organic Chemistry

In Carius method, of estimation of halogens, $$250\ mg$$ of an organic compound gave $$141\ mg$$ of $$AgBr$$. The percentage of bromine in the compound is:(Atomic mass $$Ag = 108; Br = 80$$)

Organic Chemistry

0.3780 g of an organic chloro compound gave 0.5740 g of silver chloride in Carius estimation. Calculate the percentage of chlorine present in the compound.

Organic Chemistry

Fill in the blanks : In Carius method for the estimation of halogens, the organic compound is heated with ................. and a few crystals of ............. in a sealed tube.

Organic Chemistry

0.3780 gm of an organic chloro compound gave 0.5740 gm of silver chloride in Carius estimation. Calculate the percentage of chlorine present in the compound (in nearest integer).(If answer is X, then enter $$\dfrac X6$$)

Organic Chemistry

An organic compound which produces a bluish green coloured flame on heating in presence of copper is :

Organic Chemistry

To determine the amount of halogen in an organic compound, the compound is heated with fuming $$ HNO_3$$ in presence of _________ .

Organic Chemistry

Beilstein test is reliable test for halogens in organic compounds.

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