Copper sulphate solution (250 ml) was electrolyzed using a platinum anode and copper cathode. A constant current of 2 mA was passed for 16 minute. It was found that after electrolysis, the absorbance of the solution was reduced to 50% of its original value. Calculate the concentration of copper sulphate ion in the solution to begin with.

2.67 x 10^-2 M

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4.6 x 10^-8 M

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9.5 x 10^-3 M

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7.95 x 10^-5 M

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Solution

The correct option is D
7.95 x 10^-5 M

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Copper sulphate solution (250 ml) was electrolysed using a platinum anode and a copper cathode. A constant current of 2 mA was passed for 16 minutes. It was found that after electrolysis, the absorbance of the solution was reduced to 50% of its original value. Calculate the concentration of copper sulphate in the solution to begin with.

Q. Copper sulphate solution

(250 m L)

was electrolysed using a platinum anode and a copper cathode. A constant current of

2 m A

was passed for

16

minutes. If was found that after electrolysis the absorbance of the solution was reduced to

50

% of its original value. Calculate the concentration of copper sulphate in the solution to being with.

250 ml solution of unknown molarity of CuSO₄ in water was electrolysed using platinum anode and copper cathode after the passage of a current of 2×10^-3 A for 19.3 minute the absorbance power of CuSO₄(aq.) was reduced to 50% of it's original value . The molarity of CuSO₄ was :

Q. Two platinum electrodes were immersed in a solution of cupric sulphate and electric current passed through the solution. After sometime it was found that the colour of copper sulphate disappeared with evolution of gas at the electrode.

The colourless solutions contains:

Q. An electric current is passed through silver nitrate solution using silver electrodes.

15.28

g of silver was found to be deposited on cathode. What will be the weight of copper deposited on cathode if same amount of electricity is passed through copper sulphate solution using copper electrodes?

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The correct option is D 7.95 x 10-5 M

The correct option is D
7.95 x 10^-5 M