What will happen when a block of copper metal is dropped into a beaker containing a solution of 1   M…

What will happen when a block of copper metal is dropped into a beaker containing a solution of 1 M ZnSO4?
  1. The copper metal will dissolve with evolution of oxygen gas.
  2. The copper metal will dissolve with evolution of hydrogen gas.
  3. No reaction will occur.
  4. The copper metal will dissolve and zinc metal will be deposited.

Solution

Zn is above Cu in electrochemical series. So, Zn will reduce Cu2+ to Cu.
Cu + Zn2+ → No reaction
Displacement reaction is feasible in opposite direction only.
Cu2+ + Zn  → Zn2+ + Cu ↓
 

Asked in: JEE Main 2016 (09 Apr Online)

Practice more Electrochemistry questions on Aicharya