In the reaction between acidified `K_(2)Cr_(2)O_(7)` and Iron (II) ions shown by the equation
`Cr_(2)O_(7)^(2-)(aq.)+6Fe^(2+)(aq.)+14H^(+)(aq.) rarr 2Cr^(3+)(aq.)+7H_(2)(l)+6Fe^(3+)(aq.)`

Options

A. The dichromate ions are reduced
B. The colour of the solution changes from green to yellow
C. Hydrogen ions are reduced
D. The ion (II) ions are reduced.

Answer

A