A student actually used 0.847g sample of impure KHP and the endpoint was reached after 19.82 ml of sodium hydroxide solution was added, What is the percent KHP in the unknown to four significant figures.

Answer 1

100KHP/(KHP+NaHO)
=100(0.847)/(0.847+19.82)
=4.098...%

Answer 2

I don't agree with this answer. It's nonsense.