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A solution of a salt of metal was electrolysed for 150 minutes with a current of 0.15 amperes. The mass of the metal deposited at the cathode is 0.783g. Calculate the equivalent mass of the metal. |
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Answer» Solution :Given, `I=0.15` amperes `t=150" MINS" rArr t=150xx60 SEC rArr t=9000 sec` `Q=It rArr Q=0.15xx9000" coulombs" rArr Q=1350` coulombs Hence, 135 coulombs of electricity deposit is EQUAL to 0.783g of METAL. `therefore` 96500 coulombs of electricity, `(0.783xx96500)/(1350)=55.97g` of metal Hence equivalent MASS of the metal is 55.97 |
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