A weak base is a base that does not completely dissociate into its ions in solution.

Among the given options:

a. NH3 (Ammonia) is a weak base. It accepts protons (H+) from water to form ammonium ions (NH4+) and hydroxide ions (OH-), but not all of the ammonia molecules react.

b. HCl (Hydrochloric acid) is a strong acid, not a base.

c. H2SO4 (Sulfuric acid) is also a strong acid, not a base.

d. KOH (Potassium hydroxide) is a strong base, not a weak base. It completely dissociates into potassium ions (K+) and hydroxide ions (OH-) in solution.

Therefore, the correct answer is a. NH3.

Question

A weak base is a base that does not completely dissociate into its ions in solution.

Among the given options:

a. NH3 (Ammonia) is a weak base. It accepts protons (H+) from water to form ammonium ions (NH4+) and hydroxide ions (OH-), but not all of the ammonia molecules react.

b. HCl (Hydrochloric acid) is a strong acid, not a base.

c. H2SO4 (Sulfuric acid) is also a strong acid, not a base.

d. KOH (Potassium hydroxide) is a strong base, not a weak base. It completely dissociates into potassium ions (K+) and hydroxide ions (OH-) in solution.

Therefore, the correct answer is a. NH3.

Knowee AI · Accepted Answer

A weak base is a base that does not completely dissociate into its ions in solution.

Among the given options:

a. NH3 (Ammonia) is a weak base. It accepts protons (H+) from water to form ammonium ions (NH4+) and hydroxide ions (OH-), but not all of the ammonia molecules react.

b. HCl (Hydrochloric acid) is a strong acid, not a base.

c. H2SO4 (Sulfuric acid) is also a strong acid, not a base.

d. KOH (Potassium hydroxide) is a strong base, not a weak base. It completely dissociates into potassium ions (K+) and hydroxide ions (OH-) in solution.

Therefore, the correct answer is a. NH3.

Which one of the following is weak base?a.NH3b.HClc.H2SO4d.KOH

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