1.

During electrolysis of molten sodium chloride, the time required to produce 0.1 mol of chlorinegas using a current of 3A is ………….

Answer»

55 minutes
107.2 minutes
220 minutes
330 minutes

Solution :`m = ZIT` (mass OF1 mole of `Cl_2` gas = 71)
`t = m/(ZI) ( :. "mass of 0.1 mole of " Cl_2 gas = 7.1 g mol^(-1))`
`= (7.1)/((71)/(2 xx 96500) xx 3) (2 CL^(-) to Cl_2 + 2e^(-))= (2 xx 96500 xx 7.1)/(71 xx 3) = 6433.33 sec = 107.2` min.


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