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1000mL 1M CuSO4(aq) is electrolysed by 9...

1000mL 1M `CuSO_4`(aq) is electrolysed by 9.65 A current for 100 sec using Pt-electrode which is /are correct statements?

A

Blue colour intensity decreases during electrolysis

B

Blue colour intensity remains constant if Cu-electrode used.

C

pH of solution is 8 after electrolysis.

D

28mL of `CH_4` at 1 atm and 273 K required for its combustion by `O_2`, liberated during electrolysis.

Text Solution

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The correct Answer is:
A, B, D
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Knowledge Check

  • When CuSO_(4) is electrolysed, using Pt electrodes

    A
    copper is deposited at cathode, sulpher is liberates at anode
    B
    copper is deposited at cathode, oxygen gas is liberated at andoe
    C
    oxygen gas is liberated at cathode, copper is deposited at anode
    D
    sulphur is deposited at cathode, oxygen gas is liberated at anode

  • 100L aqueous solution of KBr is electrlysed by using current of 9.65 ampere for 10 seconds, using Pt electrode. Which of the following species will not be produced due to electrolysis?

    A
    `H_(2)`
    B
    `O_(2)`
    C
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    D
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  • 100L aqueous solution of KBr is electrlysed by using current of 9.65 ampere for 10 seconds, using Pt electrode. pH of the the resulting solution in cell will be:

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    B
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    C
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    D
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