Question

give reason:when a glass rod dipped in a concentrated hydrochloric acid is held in ammonia gas white dense fumes are seen​

Answer 1

Answer:

When a rod dipped in Hydrochloric Acid (HCl) is brought to the mouth of a bottle containing liquid Ammonia (NH3), dense white fumes are observed. Over time, the white fumes condense to form a solid white mass. This mass is ammonium chloride (NH4Cl). It is formed due to the reaction between HCl and NH3.

Explanation:

Answer 2

When a glass rod dipped in the ammonia solution is brought near HCl gas, a dense white fume of ammonium chloride is formed.

This is because ammonia reacts with the fumes of HCl to give ammonium chloride.

NH  3 +HCl→NH 4 Cl