Question

During concentration (saturation), copper sulfate solution is constantly stirred to:

• A. ensure uniform evaporation
• B. prevent formation of a solid crust
• C. both A and B
• D. it is not stirred during saturation

Answer 1

The correct option is C both A and B

To concentrate the filtrate of impure copper sulfate, the china dish containing filtrate is heated gently with constant stirring. This is done to ensure uniform evaporation and to prevent the formation of a solid crust.