Home
Class 12
CHEMISTRY
An equeous solution of NaCI is electroly...

An equeous solution of `NaCI` is electrolysed with inert electrodes. Write the equations for the reactions taking place at cathode and anode. What happens if `NaNO_(3(eq.))` is used instead of `NaCI`?

A

Na is more reactive than K and Ca

B

Na is less reative then K and Ca

C

NaCI is less stable than `Na_(3)AIF_(6)` and `CaCI_(2)`

D

the discharge potential of `Na^(+), is less than that of `K^(+)` and Ca^(2+) ions

Text Solution

Verified by Experts

The correct Answer is:
D
Lower discharge potential ions deposited first at cathode.
Promotional Banner

Similar Questions

Explore conceptually related problems

An equeous solutioon of NaCI is electrolysed with inert electrodes. Write the equations for the reactions taking place at cathode and anode. What happens if aNO_(3(eq.)) is used instead of NaCI ?

Aim : To study the reaction between lead nitrate and potassium iodide. Activity: Take lead nitrate solution in a test tube. Add the solution of potassium iodide in it. Write the balanced chemical equation for the reaction that takes place between lead nitrate and potassium iodide.

A solution of a substance 'X' is used for whitewashing (2) Write the molecular formula of substance 'X' (3) Write the equation of reaction of the substance 'X' with water .

50mL of 0.1M CuSO_(4) solution is electrolysed with a current of 0.965A for a period of 200sec. The reactions at electrodes are: Cathode: Cu^(2+) +2e^(-) rarr Cu(s) Anode: 2H_(2)O rarr O_(2) +4H^(+) +4e . Assuming no change in volume during electrolysis, calculate the molar concentration of Cu^(2+),H^(+) and SO_(4)^(2-) at the end of electrolysis.

An aqueous solution of Na_(2)SO_(4) was electrolysed for 10 min. 82 ml of a gas was produced at anode and collected over water at 27^(@)C at a total pressure of 580 torr. Determine the current that was used in amp. Given: Vapour pressure of H_(2)O at 27^(@)C = 10 torr R = 0.082 atm L//mol-K Write your answer excluding decimal places.