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Calculate the quantity of electricity that would be required to reduce 12.3 g of nitrobenzene to aniline if the current efficiency for process is 50 per cent. If the potential drop across the cell is 3 volts, how much energy will be consumed? |
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Answer» Solution :The reduction reaction may be written as: `C_(6)H_(5)NO_(2)+6H^(+)+6e^(-)toC_(6)H_(5)NH_(2)+3H_(2)O` Thus, 1 mol of `C_(6)H_(5)NO_(2)`, i.e., 123 g require electricity`=6xx96500C=579000C` `therefore12.3`g require electricity=57900 C As the CURRENT EFFECIENCY is 50%, quantity of electricity actually required`=2xx57900C=115800C` Energy consumed=`EMFxx`Qty. of electricity`=3xx115800J=347400J`. |
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