(a) Following reactions occur at cathode during the electrolysis of aqueous sodium chloride solution: Na^+(aq) + e^(

### Question Asked by a Student from EXXAMM.com Team

Q 2640580413.     (a) Following reactions occur at cathode during the electrolysis of aqueous sodium chloride solution:

Na^+(aq) + e^(-) ⟶ Na (s) ;E^0 = - 2.71 V
H^+(aq) + e^(-) ⟶1/2 H_2 (g) ; E^0 = 0.00 V
On the basis of their standard reduction electrode potential (E^0)` values, which reaction is feasible at the cathode and why?

(b) Why does the cell potential of mercury cell remain constant throughout its life?
CBSE-12th 2015

#### HINT

(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

#### Access free resources including

• 100% free video lectures with detailed notes and examples
• Previous Year Papers
• Mock Tests
• Practices question categorized in topics and 4 levels with detailed solutions
• Syllabus & Pattern Analysis