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CBSE Class 12-science Answered

Calculate the no.of electrons lost or gained during electrolysis of 1 gm cu2+ ions
Asked by SANJEEVA | 22 Jul, 2018, 03:32: PM
answered-by-expert Expert Answer
Given colon space
Wt. space of space Cu to the power of 2 plus end exponent ions equals 1 gm

Find colon space No. space of space electrons

Solution colon
Lets space find space the space moles space of space Cu to the power of 2 plus end exponent ions comma

Molecular space wt space of space copper equals 63.55 straight g

So comma space No. of space moles space equals space fraction numerator Given space wt. over denominator Molecular space wt. end fraction space equals space fraction numerator 1 over denominator 63.55 end fraction space equals space 0.016 space moles

We space also space know comma
No. of space electrons space equals space no. space of space moles space cross times 6.023 space cross times 10 to the power of 23
space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 0.016 cross times 6.023 space cross times 10 to the power of 23
space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 9.636 space cross times 10 to the power of 21
Answered by Ramandeep | 23 Jul, 2018, 11:00: AM
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