An acidic solution of cupric ions containing 0.4gram of cupric ions is electrolysed until all copper is deposited.Calculate the volume of oxygen evolved at N.T.P ?

Asked by  | 23rd Mar, 2013, 06:58: PM

Expert Answer:

Cu2+               + H2O =     Cu    + 2H+     +1/2 O2

63.5/2 =31.75g Cu2+ evolves oxygen gas at NTP   =                                     1/2 x22400 =11200cc

 

 and 0.4g   evolves               11200 x .4 /31.75 =141cc oxygen gas

Answered by  | 6th May, 2013, 12:58: PM

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