Which property of H2SO4 allows it to be used in preparation of HCL and HNO3?

Open in App

Solution

ANSWER TO THE QUERY IS GIVEN BELOW
In preparations that call for concentrated sulfuric acid, it usually has the role of trapping moisture. If dilute sulfuric acid is used, then nitric or hydrochloric acid may still be produced (since they boil more readily than the sulfuric acid), but they will contain water. Specifically, hydrochloric acid has an azeotropic concentration somewhere around 20%, while for nitric acid it’s 68%. But if these are distilled from concentrated sulfuric acid then relatively dry hydrochloric acid, or concentrated nitric acid, can be obtained - since the water is left behind.

Suggest Corrections

Similar questions

(a) What is the property of concentrated sulphuric acid which allows it to be used in the preparation of hydrogen chloride and nitric acid?
(b) What property of hydrogen chloride is demonstrated when it is collected by downward delivery (upward displacement)?
(c) Why is hydrogen chloride not collected over water?

Q. Nitrobenzene can be prepared from benzene by using a mixture of conc.

H N O_{3}

and conc.

H_{2} S O_{4}

. In the nitrating mixture,

H N O_{3}

acts as:

Which of the following cannot be used for the preparation of $H_{2}$

Q. Which of the following are used as drying agent during the preparation of

H C l

from the

N a C l

and

H_{2} S O_{4}

Why is conc. HCl not used in place of conc. $H_{2} S O_{4}$ in the laboratory preparation of nitric acid?

Join BYJU'S Learning Program