An acidic solution of \( \mathrm{Cu}^{2+} \) salt containing \( 0.4 \mathrm{~g} \) of \( \mathrm...

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An acidic solution of \( \mathrm{Cu}^{2+} \) salt containing \( 0.4 \mathrm{~g} \) of \( \mathrm{Cu}^{2+} \) is electrolysed untill all the copper is deposited. The electrolysis is continued for 7 more minutes with the volume of solution kept at \( 100 \mathrm{ml} \) and the current at \( 1.2 \mathrm{amp} \).
\( \mathrm{P} \) Calculate volume of gases evolved at NTP during the entire electrolysis. (Atomic mass of \( \mathrm{Cu}=63.5 \) )

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