Question

1. Answer the following questions:

a. What is the general name of bases that are soluble in water? (1)

b. Are all bases alkalis? (1)

c. Why does the colour of dry litmus paper not change in contact with dry HCL

gas?(3)​

Answer 1

Answer:

a.) alkalis

The common name of water soluble bases is called alkalis. Example: NaOH,KOH,etc.

b.)Bases do not dissolve in water for example NaOH and alkalis dissolve in water for example CuO. ... Main difference is that bases that dissolve in water are called alkalis and bases that don't dissolve in water are only bases not alkalis, so we can say all bases are not alkali but all alkalis are bases.

c.) In case of dry HCl gas, there is no presence of water and so, the dye on litmus paper cannot react with the gas. So, any dry gas will not give any change in the colour of litmus paper.

Plz Mark me as brainleast and follow me