Question

how many moles KMnO4 are required to oxidised 1 mole of essential in acidic medium​

Answer 1

Answer:

Equate equivalents.

Equivalents = n−factor×moles

For KMnO4 n-factor is 5. Let moles be 'm'.

So equivalents of KMnO4=5×m=5m.

n-factor for SnCl2 is 2 as it goes from +2−+4 oxidation state. It's moles is 1.

So equivalents is 2.

5m=2

m=52