Question

State in each of the following reactions whether heat is evolved or absorbed i) water is added to quicklime ii) two neutral gases combine to give a basic gas
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Answer 1

Answer:

Sulfuric acid is sometimes referred to as the “king of chemicals” because it is produced worldwide in such large quantities. In fact, per capita use of sulfuric acid has been taken as one index of the technical development of a country. Annual production in the United States, which is the world’s leading producer, is well over 39 billion kg (86 billion pounds). It is the cheapest bulk acid.

Answer 2

Answer:

(a) Exothermic reactions

(b) Endothermic reactions

1. When water is added to quicklime heat is evolved.
2. Nitrogen and oxygen
3. Ammonia is a basic gas obtained from Nitrogen and Hydrogen.