Conjugate Acids and Bases Concepts

The video tutorial explores acid and base reactions, focusing on weak acids like hydrofluoric acid and ammonium. It introduces the concept of conjugate pairs, explaining how acids and bases differ by a hydrogen ion. The tutorial also discusses strong acids and their neutral conjugate bases, emphasizing the equilibrium nature of weak acids and bases.

What is the characteristic of a weak acid in an aqueous solution?

• It does not react with water.

• It remains in equilibrium.

• It forms a strong base.

• It disassociates completely.

How can a weak acid be represented as a weak base?

• By increasing its concentration.

• By considering its conjugate pair.

• By heating the solution.

• By adding more water.

What defines a conjugate pair in acid-base chemistry?

• Two molecules with different charges.

• Two molecules with the same number of electrons.

• Two molecules differing by one hydrogen proton.

• Two molecules differing by two hydrogens.

Which of the following is a conjugate acid of NH3?

• NH2-

• NH2+

• NH4+

• NH3+

What happens to the conjugate base of a strong acid in water?

• It forms a strong base.

• It becomes highly acidic.

• It remains neutral.

• It reacts with water to form a new compound.

Which statement is true about the conjugate base of a weak acid?

• It does not exist.

• It is a strong base.

• It is neutral in water.

• It is a weak base.

What is the conjugate base of HCl?

• ClO-

• H2Cl

• HClO

• Cl-

What is the conjugate base of H2SO4?

• HSO3-

• H2SO3

• SO4-

• HSO4-

What is the result of adding a proton to OH-?

• OH2

• H2

• O2

• H2O

What is the conjugate acid of H2O?

• H3O+

• H2O2

• O2-

• OH-