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Describe the oxidising action of potassium dichromate and write the ionic equations for its reaction with : (i) iodide (ii) iron (II) solution and (iii) H_(2)S |
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Answer» Solution :(i) `Cr_(2)O_(7)^(2-)+14H^(+)+6I^(-)to 2Cr^(3+)+7H_(2)O+3I_(2)` (II) `Cr_(2)O_(7)^(2-)+6Fe^(2+)+14H^(+)to 2Cr^(3+)6Fe^(3+)+7H_(2)O` (III) `Cr_(2)O_(7)^(2-)+8H^(+)+3H_(2)S to 2Cr^(3+)+7H_(2)O+3S` |
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