0.5 g of impure ammonium chloride was heated with caustic soda solution to evolve ammonia gas, the gas is absorbed in 150 mL of N//5 H_(2)SO_(4) solution. Excess sulphuric acid required 20 mL of 1N NaOH for complete neutralization. The percentage of NH_(3) in the ammonium chloride is :

0.5 g of impure ammonium chloride was heated with caustic soda solutio

1.	0.5 g of impure ammonium chloride was heated with caustic soda solution to evolve ammonia gas, the gas is absorbed in 150 mL of N//5 H_(2)SO_(4) solution. Excess sulphuric acid required 20 mL of 1N NaOH for complete neutralization. The percentage of NH_(3) in the ammonium chloride is :
Answer» 0.68 0.34 0.48 0.17 Answer :B