Question

The ammonia (NH₃) released on quantitative reaction of 0.6 g urea (NH₂CONH₂) with sodium hydroxide (NaOH) can be neutralized by : 

(1) 100 ml of 0.1 N HCl 

(2) 200 ml of 0.4 N HCl 

(3) 100 ml of 0.2 N HCl 

(4) 200 ml of 0.2 N HCl

Answer 1

Answer is (3) 100 ml of 0.2 N HCl

Hence, NH₃ will require 20 meq.

Answer 2

Answer is (3) 100ml of 0.2NHCl

0.6 gm

10^–2 mole, 10m. moles 

m. moles of NH₃ = 20

m. moles of HCl = 20m moles 

Hence 1 is correct.