Question

20cm³ of a solution containing impure 4.4g of NAOH in 1litre was neutralized by 8.0cm³of 0.125M sulphuric acid . calculate the percentage purity of the base and mass of pure sodium hydroxide in impure mass

Answer 1

Answer:

Explanation:

mvf=mvf

m(20) = 2

m=0.1 M

w/40=0.1

w=4 gm

mass of pure base = 4 gm

purity of base = 4/4.4

purity of base = 91 percent