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The concentrated hydrochloric acid used ...

The concentrated hydrochloric acid used in the laboratory contains about `"______"%` by mass of hydrogen chloride:

A

`20`

B

`98`

C

`65`

D

`38`

Text Solution

Verified by Experts

The correct Answer is:
4
It has a concentrated of `12" mol L"^(-1)` and has a density of `1.20 g cm^(-3)`. Pure hydrochloric acid is colorless but technical grader are sometimes yellow because of contamination by `Fe(III)`
Water and `HCl` form a maximum boiling azeotrope on account of negative deviation form Raoult's law
The largest use is for 'picking metals that is removing oxide layer from the surface. It is also used to make metal chlorides,in the manufacture of dyestuffs and in the sugar industry.
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