Question

Ammonium hydroxide is a weak base because:

• A. It has low vapour pressure
• B. It is only slightly ionized
• C. It is not a hydroxide of any metal
• D. It has low density

Answer 1

The correct option is B It is only slightly ionized

$N{H}_{4}OH$ is a weak electrolyte as it is only slightly ionize or dissociates in water. Hence, it does not dissociate completely into ions and value of $K_b$ is low.