Question

The normality of 10mL of a '20 V' H2O2 Solution​

Answer 1

Answer:

20VH2O2 means that 1 litre of H2O2 solution would produce 20 litre of Oxygen.

2H2O2.....................>H2O+ O2

From the equation it is clear that 2 moles of H2O2 produce 1 mol of O2

But 20V H2O2 will produce 20 litre of oxygen for 1 litre of H2O2.

............................................⇒ (20litre/24.4litre) mol of oxygen liberated for 1 litre of H2O2

So in 1 litre solution of H2O2, moles of H2O2=2*moles of oxygen = (2*20/24.4) mol/litre=1.67M

n-factor of H2O2=2 

So, normality=Molarity*n-factor=1.67*2=3.34N