Give reasons : 1. In the laboratory preparation of HCL acid from NACL and conc H2SO4 , the residual salt formed at temperatures above 200 °C forms a hard crust and stick to the glass. [2] 2. In the fountain experiment to demonstrate the high solubility of HCL gas in water , dry HCL gas is filled in the round bottom flask. [2]

Give reasons : 1. In the laboratory preparation of HCL acid from NACL

1.	Give reasons : 1. In the laboratory preparation of HCL acid from NACL and conc H2SO4 , the residual salt formed at temperatures above 200 °C forms a hard crust and stick to the glass. [2] 2. In the fountain experiment to demonstrate the high solubility of HCL gas in water , dry HCL gas is filled in the round bottom flask. [2]
Answer» Give reasons : 1. In the laboratory preparation of HCL acid from NACL and conc H2SO4 , the residual salt formed at temperatures above 200 °C forms a hard crust and stick to the glass. [2] 2. In the fountain experiment to demonstrate the high solubility of HCL gas in water , dry HCL gas is filled in the round bottom flask. [2]