Question

When a glass rod dipped in hydrochloric acid is brought near a jar filled with ammonia, dense yellow fumes are observed.

• A. True
• B. False

Answer 1

The correct option is B

False

The statement which is given to us "When a glass rod dipped in hydrochloric acid is brought near a jar filled with ammonia, dense yellow fumes are observed" is a false statement. When a rod dipped in Hydrochloric Acid (HCl) is brought to the mouth of a bottle containing liquid ammonia $N{H}_3$, dense white fumes are observed. The reaction of HCl with $N{H}_4$ is given below.

$N{H}_3+HCl\to N{H}_{4}Cl$

In this reaction, the white fumes that are produced are of ammonium chloride $N{H}_{4}Cl$. Over time, the white fumes condense to form a solid white mass.