NEET UG CHEMISTRY MCQ: ELECTRO CHEMISTRY

1 Hard

1 of 1

Application +4 | -1

Assuming that copper contains only iron, silver and gold as impurities. After passage of

12.4 \mathrm{~A}

for

4825 \mathrm{~s},

the mass of anode decreased by

20.00 \mathrm{~g}

and the cathode increased by

19.05 \mathrm{~g}.

The percentages of iron and copper in the original sample are, respectively,

(\mathrm{Cu}=63.5, \mathrm{Fe}=56)

View answer and explanation

Correct option: B

2.8 \%, 95.25 \%

Option B (

2.8 \%, 95.25 \%

) is correct because it accurately calculates the percentages of iron and copper in the original sample based on the anode decrease and cathode increase.

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