19 g of molten SnCl2 is electrolysed for...

19 g of molten `SnCl_2` is electrolysed for sometime using inert electrodes. 0.119g of Sn is deposited at the cathode. No substance is lost during the electrolysis. The ratio of the weights of `SnCl_2` : `SnCl_4` after electrolysis [Atomic weight of `Sn = 119`]

`71.34 : 1`

`31.34 : 1`

`7.134 : 1`

None of these

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