Question

Determine the molarity of the given KMnO4 solution with the help of supplied
Mohr's salt solution by titration method.​

Answer 1

Answer:

molarity = w × 1000/ molarmass ×col in ml

by putting all value of obtained exp get the molarity of kmn04 solution

Answer 2

Dear Student,

◆ Determining the molarity of the given KMnO4 solution -

Take known volume of KMnO4 solution and titrate it against Mohr's salt of known concentration.

Reaction for this titration is -

2KMnO4 + 10FeSO4(NH4)2SO4.6H2O + 8H2O → K2SO4 + 2MnSO4 + 5Fe2(SO4)3 + 10(NH4)2SO4 + 68H2O

Molarity of KMnO4 is determined by formula -

M(KMnO4)×V(KMnO4) / M(Mohr's salt)×V(Mohr's salt) = 2/10

M(KMnO4)×V(KMnO4) / (1/20)×V(Mohr's salt) = 2/10

M(KMnO4) = V(Mohr's salt) / 100V(KMnO4)

Thanks dear. Hope this helps you...