Q14 / 90 · JEE Main 2016 (09 Apr Online) · Chemistry

What will happen when a block of copper metal is dropped into a beaker containing a solution of $1 M$ $Z n S O_{4}$ ?

A
The copper metal will dissolve with evolution of oxygen gas.
B
The copper metal will dissolve with evolution of hydrogen gas.
Correct answer
C
No reaction will occur.
D
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

↓

Hence, the correct answer is option: 'C'.

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What will happen when a block of copper metal is dropped into a beaker containing a solution of 1 M ZnSO4?

Solution

Relevant Questions

What will happen when a block of copper metal is dropped into a beaker containing a solution of $1 M$ $Z n S O_{4}$ ?