CBSE Class 12-science Answered
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![question image](https://images.topperlearning.com/topper/new-ate/topr_32741125438310108rps20190813132734.jpeg)
Asked by lovemaan5500 | 13 Aug, 2019, 17:53: PM
Given reaction,
Al3+ + 3e− → Al
Equivalent weight of Al =![27 over 3](https://images.topperlearning.com/topper/tinymce/cache/2dc28efc91f0ffb6042b88d208666040.png)
![27 over 3](https://images.topperlearning.com/topper/tinymce/cache/2dc28efc91f0ffb6042b88d208666040.png)
= 9
Electrochemical equivalent,Z =![equals fraction numerator Eq. space wt space of space Al over denominator 96500 end fraction
equals 9 over 96500
equals 9.32 cross times 10 to the power of negative 5 end exponent](https://images.topperlearning.com/topper/tinymce/cache/dbad376374684e93cfc68af52fc77171.png)
![equals fraction numerator Eq. space wt space of space Al over denominator 96500 end fraction
equals 9 over 96500
equals 9.32 cross times 10 to the power of negative 5 end exponent](https://images.topperlearning.com/topper/tinymce/cache/dbad376374684e93cfc68af52fc77171.png)
We know
Weight = ZIt
= Z× no. of coulombs
no. of coulombs
![equals fraction numerator 5.4 over denominator 9.23 cross times 10 to the power of negative 5 end exponent end fraction
equals 57900 space coulombs](https://images.topperlearning.com/topper/tinymce/cache/f38562c9fa3edf4ea58d9d8191dc0df1.png)
Answered by Varsha | 13 Aug, 2019, 18:18: PM
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