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Complete the following chemical equation...

Complete the following chemical equations :
(i) `MnO_(4)^(-) (aq) + S_(2)O_(3)^(2-) (aq) + H_(2) O(l) to1`
(ii) `Cr_(2)O_(7)^(2-) (aq) + Fe^(2+)(aq) + H^(+) (aq) to`

Text Solution

Verified by Experts

`8 MnO_(4)^(-)(aq) + 3S_(2) O_(3)^(2-)(aq)+H_(2)O(l) to8MnO_(2)+6SO_(4)^(2-) + 2OH^(-)`
Thiosulphate is oxidised almost qunatiatively to sulphate.
(ii) `Cr_(2)O_(7)^(2-)(aq) + 6Fe^(2+)(aq) + 14H^(+)(aq) to 2Cr^(3+) + 6Fe^(3+)+7H_(2)O`
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