Question

Addition of iron or zinc to copper sulfate causes precipitation of copper owing to the_______

• A. reduction of $C{u}^{2+}$
• B. oxidation of $C{u}^{2+}$
• C. hydrolysis of $CuS{O}_4$
• D. ionisation of $CuS{O}_4$

Answer 1

Answer: (A)

reduction of $C{u}^{2+}$

Addition of iron or zinc to copper sulphate causes precipitation of copper owing to the reduction of ${Cu}^{+2}$ to $Cu$ because iron or zinc is more reactive than copper so they replace copper from its solution.