Question

Assuming that a student started with 65.6 g of copper, calculate the theoretical yield of copper sulphate.

• A. 165 g
• B. 82.4 g
• C. 90 g
• D. 100.2 g

Answer 1

The correct option is A 165 g

In the given process, 1 mole of copper gives 1 mole of copper sulphate.

The molar masses of copper and copper sulphate are 63.5 g/mol and 159.5 g/mol respectively.

Thus, 63.5 g of copper will give 159.6 g of copper sulphate.

Thus, 65.6 g of copper will give $\frac{159.6\times 65.6}{63.5}g=165g$ of copper sulphate.

This corresponds tot the theoretical yield of copper sulphate.