Which reaction is possible at anode?A. `2Cr^(3+)+7H_(2)OrarrCr_(2)O_(7)^(2-)+14H^(+)`B. `F_(2)rarr2F^(-)`C. `O_(2)+4H^(+)rarr2H_(2)O`D. None of the above

Which reaction is possible at anode?A. `2Cr^(3+)+7H_(2)OrarrCr_(2)O_(7

1.	Which reaction is possible at anode?A. `2Cr^(3+)+7H_(2)OrarrCr_(2)O_(7)^(2-)+14H^(+)`B. `F_(2)rarr2F^(-)`C. `O_(2)+4H^(+)rarr2H_(2)O`D. None of the above
Answer» Correct Answer - A Oxidation occurs at anode.

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`0.80 g` of sample of impure potassium dichromate was dissolved in water and made up to `500 mL` solution. `25 mL` of this solution treated with excess of `KI` in acidic medium and `I_(2)` liberated required `24 mL` of a sodium thiosulphate solution. `30 mL` of this sodium thiosulphate solution required `15 mL` of `N//20` solution of pure potassium dichromate. What was the percentage of `K_(2)Cr_(2)O_(7)` in given sample?A. `73.5%`B. `75.3%`C. `36.75%`D. none of these
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Which reaction is possible at anode?A. `2Cr^(3+)+7H_(2)OrarrCr_(2)O_(7)^(2-)+14H^(+)`B. `F_(2)rarr2F^(-)`C. `O_(2)+4H^(+)rarr2H_(2)O`D. None of the above

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