Potassium dichromate is used

Options

A. in electroplating
B. as a reducing agent
C. oxidise ferrouse ion into ferric ions in acidic media as
D. oxidise ferrous ions into ferric ions in acidic media as an oxidsing agent

Answer

C

Explanation

Potassium dichromate is an oxidising agent, thus it oxidises ferrous ion into ferric ion in acidic medium. `{:(Cr_(2)O_(7)^(2-)+14H^(+)+6e^(-)rarr2Cr^(3+)+7H_(2)O),(" "[Fe^(2+)rarrFe^(3+)+e^(-)]),(bar(Cr_(2)O_(7)^(2-)+6Fe^(2+)+14 H^(+) rarr 6Fe^(3+)+2Cr^(3+)+7H_(2)O)):}`