Acids, Bases and Salts | Class 10 | Activity 2.7 with Solution

Activity 2.7
  • Take a small amount of copper oxide in a beaker and add dilute hydrochloric acid slowly while stirring.
  • Note the colour of the solution. What has happened to the copper oxide?
✅ Answer: The solution becomes blue-green colour and the copper oxide dissolves. The colour is due to the formation of copper(II) chloride (CuCl2).

CuO + 2HCl → CuCl2 + H2O

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