1.

(i) Write the two chemical equations to show theinter conversion of chromates & dichromates in aqueous solution. (ii) Complete the equation: 5C_2O_4^(2-) + 2MnO_(4)^(-) + 16H^(+).

Answer»

SOLUTION :(i) `2CrO_(4)^(2-) + 2H^(+) rarr Cr_(2)O_(7)^(2-) + H_(2)O`
`Cr_(2)O_(7)^(2-) + 2OH^(-) rarr 2CrO_(4)^(2-) + H_(2)O`
`5C_(2)O_(4)^(2-) + 2MnO_(4)^(-) + 16H^(+) rarr 2MN^(2+) + 8H_(2)O + 10CO_(2)`


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