What is meant by conjugate base and acid?

Answer 1

The acid formed when a base gains an H+

Answer 2

The conjugate base results after the acidic hydrogen (proton) has been removed from the acid.

The conjugate acid results after the base has picked up a proton from another stronger acid.

Conjugated pairs of acid and base always differ only one proton, and the stronger the acid, the weaker the conjugate base, and vice versa. (the stronger one is in 'bold' characters)

For instance, (acid and base couples, all in water solution)

HCl and Cl-, (chloride is very, very weak; weaker than H2O as base)

CH3COOH and CH3COO- (acatic acid and acetate),

NH4+ and NH3 (ammonium and ammonia),

H2CO3 and HCO3- (hydrous carbon dioxide (carbonic acid) and monohydrogen carbonate)

HCO3- and CO32- (monohydrogen carbonate and carbonate)

H3O+ and H2O (hydronium and water)

H2O and OH- (water and hydroxide)

CH3CH2OH and CH3CH2O-(ethanol and ethoxide anion or ethanoate, a stronger base than hydroxide!)

Answer 3

The conjugate base of an acid is the substance that remains after the acid has donated its proton.Example: Acid is HX and conjugate base is X^-.

Acid is HCl, conjugate base is Cl^-.

Acid is acetic acid (CH3COOH), conjugate base is acetate (CH3COO^-)

Answer 4

A conjugate base is the species that forms when an acid donates a proton, while a conjugate acid is the species that forms when a base accepts a proton. They differ from their parent acid or base by one proton.

Answer 5

Acetic acid

CH3COOH