A student took a small amount of copper oxide in a conical flask

Acids, Bases and Salts (10)

A student took a small amount of copper oxide in a conical flask and added dilute hydrochloric acid to it with constant stirring. He observed a change in colour of the solution.

  1. Write the name of the compound formed and its colour.
  2. Write a balanced chemical equation for the reaction involved.
  • Answer:

    i. Copper (II) chloride / Copper chloride / Cupric chloride / CuCl2

    Colour: blue-green.

    ii. CuO + 2HCl → CuCl2 + H2O
  • Exam Year: 2023