Consider a titration of potassium dichromate solution with acidified Mohr's salt solution using diphenylamine as indicator. The number of moles of Mohr's salt required per mole of dichromate is:

Options

A. 3
B. 4
C. 5
D. 2

Answer

D

Explanation

`K_(2)Cr_(2)O_(7)+FeC_(2)O_(4)+H^(+)toCr^(+2)+Fe^(+3)+CO_(2)`
The number of moles of ferrous oxalate required per mole of dichromate will be 2.