Question

Describe the industrial use of hydrogen which depends on

(i) the heat liberated when it burns.

(ii) its ability to react with vegetable oil in the presence of a catalyst.

(iii) its ability to unite with N2​

Answer 1

Explanation:

(i) the heat liberated when it burns, ... The apparatus in which heat is produced is called a oxy-hydrogen torch. (ii) When dihydrogen is passed through vegetable oil at 8-10 atmospheric pressure and a temperature of 470 K.,vanaspati ghee (solid fat) is produced. The process is called hydrogenation or hardening of oils.

Hydrogen is used in the oxy-hydrogen flame for welding purposes.

(i) Due to this property hydrogen is used in atomic hydrogen welding/cutting torch.

(ii) Due to this property hydrogen is used for the manufacture of vanaspati ghee from edible oils such as cotton-seed oil, soyabean oil, corn oil etc.



(iii) Due to this property dihydrogen is used for the manufacture of ammonia.