Question

7. What do you understand by a strong acid? Give two
examples of strong acids.​

Answer 1

Answer:

Strong acids can catalyze chemical reactions.

Strong acids are defined by their pKa. The acid must be stronger in aqueous solution than a hydronium ion, so its pKa must be lower than that of a hydronium ion. Therefore, strong acids have a pKa of <-174.

Answer 2

Answer:

Acids that ionise completely when dissolved in water and release large amount of hydrogen gas are strong acids.

For ex-sulphuric acid, nitric acid