Question

a. Which of the following are Brostead Lowry acids? (explain why)

HCl, H2O, H2PO3-, NH3.

b. Identify all the weak acids and explain how they are identified.

HF HCl HBr HI H2O

c. Consider the reaction CH3COOH(aq)+H2O(l)<-->CH3OO-(aq)+H3O+(aq).

-Identify all Arrhenius acids in the reaction

-Identify all Brostead Lowry bases in the reaction

Answer 1

a. Proton donor is called Brosnsted lowry acid.

HCl, H2O, H2PO3^ are donate the protons. They are Bronsted -Lowry acids.

b. H2O is weak acid. HCl, HBr,HI, HF are completely ionisable to gives more number of H^+ ions.

H2O is poor electrolyte. So it partialy ionisable to gives less number of H^+ ions. It is weak acid

c.Arrhenius acids: In substance which gives H^+ ions aqueous solution

Brostead Lowry bases : proton aceptor is called Brostead Lowry bases.

CH3COOH(aq)+H2O(l)<-->CH3OO-(aq)+H3O+(aq).

CH3COOH , H2O, H3O^+ are Arrhenius acids.

CH3COO^- , H2O are Brostead Lowry base