COMEDK Exam 2019 Solved Paper

In the titration of Mohr's salt with KMnO4, the indicator used is KMnO4 itself. Because KMnO4 is very intense purple in colour. When, the solution changes to pink, end point is noted.

MnO4−

Dark‌purple

‌ Reduction with ‌

─────────▶

Mohr′s‌salt

Mn2+

Pink