Metallic tin in the presence of HCl is oxidized by `K_(2)Cr_(2)O_(7)` to stannic chloride, `SnCl_(4)` . What volume of deci-normal dichromate solution would be reduced by 1 g of tin.

SO_(2) reduces acidified K_(2)Cr_(2)O_(7) to

In a solution acidified with HCI, K_(2)Cr_(2)O_(7) oxidises metallic tin (sin) to stannic chloride (SnCI_(4)) . What volume of a decinormal K_(2)Cr_(2)O_(7) solution is required to oxidise 0.1 g of tin ?