Find the number of reagent(s) which oxidized HCO_(3)^(-) ion wolution. MnO_(4)^(-)//H^(+),Cr_(2)O_(7)^(2-)//H^(+),CI_(2)-water, Br_(2)-water, I_(2)-water

Find the number of reagent(s) which oxidized HCO_(3)^(-) ion wolution.

1.	Find the number of reagent(s) which oxidized HCO_(3)^(-) ion wolution. MnO_(4)^(-)//H^(+),Cr_(2)O_(7)^(2-)//H^(+),CI_(2)-water, Br_(2)-water, I_(2)-water
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