NTA Abhyas JEE Main2020ChemistryElectrochemistryPractice
In a cell that utilizes the reaction Zn(s) + 2H + (aq) → Zn 2+ (aq) + H 2 (g) addition of H 2 SO 4 to cathode compartment,
Options
- ALowers the E and shifts equilibrium to the left
- BLowers the E and shifts the equilibrium to the right
- CIncreases the E and shifts the equilibrium to the right
- DIncreases the E and shifts the equilibrium to the left
Correct answer
C. Increases the E and shifts the equilibrium to the right
Step-by-step solution
Zn(s)   +   2H + (aq) → Zn 2+ (aq)   +   H 2 (g) E  cell   =   E  cell o − 0 .059 2  log     Zn 2+   ×   p H 2 H + 2 On adding H 2 SO 4 , the H + will increase therefore E cell will also increase and the equilibrium will shift towards the right.