Question

Thick white fumes are formed when a glass rod dipped in NH4OH is brought near the mouth of a bottle full of HCl gas. Why?​

Answer 1

Answer:

Explanation:

when the gas of HCL comes in contact of the glass rod dipped in NH4OH precipitation takes place due to which white fumes are formed

Answer 2

this happens because the HCl vapours react with NH4OH to form NH4Cl which are the white fumes.

here no water is formed

these white fumes  are very fine ammonium chloride crystals