Ionic EquilibriumEasy
Question
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.6
Solution
Cr2O72- + Fe2+ → Fe3+ + Cr3+
n factor of Cr2O72- = 6
n factor of Fe2+ = 1
So to reduce one mole of dichromate 6 moles of Fe2+ are required.
Hence (D) is correct.
n factor of Cr2O72- = 6
n factor of Fe2+ = 1
So to reduce one mole of dichromate 6 moles of Fe2+ are required.
Hence (D) is correct.
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