Saved Bookmarks
| 1. |
Copper sulphate solution (250 mL) was electrolysed using a platinum anode and copper cathode. A constant current of 2 mA was passed for 16 minutes. It was found that after electrolysis the absorbance of the solution was reduced to 50% of its original value. Calculate the concentration of copper sulphate in the solution to begin with. |
|
Answer» SOLUTION :INITIAL mole of `CuSO_4` per 250 ml `= 2 xx` mole of `CuSO_4` lost 2 x mol of CU deposited `7.958 xx 10^(-5) M` |
|