Question

Why potassium chromate was added to the product reaction of lead nitrate with hydrochloric acid ?​

Answer 1

Answer:

$\huge\sf\underline{Answer}$

As hydrochloric acid is added to the potassium chromate solution, the yellow colour turns to orange. When sodium hydroxide is added to the potassium chromate solution, the orange colour turns back to yellow. The sodium hydroxide reacts with hydrogen ions, removing them from the solution