Question

What compound is used to titrate unknown KMnO4 in introductory activity? a) K2Cr2O7

b) NaOH
c) HCl
d) FeSO4

Answer 1

K2Cr2O7 is used to titrate unknown KMnO4 in an introductory activity.

Step-by-step explanation:

The compound used to titrate unknown KMnO4 in an introductory activity is K2Cr2O7.

In the given information, K2Cr2O7 is suggested for periodic restandardization.

By using K2Cr2O7 as a titrant, it oxidizes Fe2+ to Fe3+ in the reaction.