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Standard X

Chemistry

Working of Salt Bridge

What is the m...

Question

What is the mass of Cl2 obtained on passing 1A current through NaCl solution for 30mins ?

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Q. The mass of

C l_{2}

produced in grams when 1A current is passed through NaCl solution for 30 minute is:

Q. A constant current of

30 A

is passed through an aqueous solution of

N a C l

for a time of

1.00 h

. What is the volume of

{C l}_{2}

gas at STP produced?

During electrolysis of aq. NaCl solution for 6 hours, 11.2 litres of Cl₂ gas at STP is evolved at anode. The current in amperes passing through the cell during electrolysis is

Q. An aqueous solution of NaCl on electrolysis gives

H_{2}

(g),

C l_{2}

(g) and NaOH according to reaction,

2 C l^{-} (a q) + 2 H_{2} O \to 2 O H^{-} (a q) + H_{2} (g) + C l_{2} (g)

A direct current of 25 ampere with a current efficiency of 62% is passed through 20 litre of NaCl solution (20% by mass) Write down the reactions taking place at the electrodes.
The redox changes are : Cathode:

2 C l^{-} \to C l_{2} + 2 e

Anode :

2 e + 2 H_{2} O \to 2 O H^{-} + H_{2}

Q. A current of

9.65

A is passed through

100

N a C l

solution containing sufficient

N a C l

for

100

s. What will be the

p H

of the resulting solution?

Assume

100 %

current efficient and constancy of the volume of solution.

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