Engineering
Chemistry
Compounds of Nitrogen Family
Question

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

100 ml of 0.2 N HCl

100 ml of 0.1 N HCl

200 ml of 0.2 N HCl

200 ml of 0.4 N HCl

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Solution

2 × mole of Urea ≡ mole of NH3  ........(1)

mole of NH3 = mole of HCl             ........(2)

∴ mole of HCl = 0.02 mole