Question

The compound ammonium hydroxide is a weak base. What must be true of ammonium hydroxide? A. It has a pH slightly above 7 B. It has a pH slightly below 7 C. It has a pH value close to 14 D. It has a pH value close to 0.

Answer 1

Ammonium hydroxide is a weak base, meaning it will have a pH slightly above 7, due to its partial ionization in water.

So, the correct answer is A.

Step-by-step explanation:

Ammonium hydroxide is a weak base, which means it does not fully ionize in water. Instead, it partially dissociates to release hydroxide ions (OH-) in solution. As it is only slightly ionized, a solution of ammonium hydroxide will have a pH slightly above 7, reflecting its basic nature, but not to the extent of a strong base with a pH closer to 14. Strong bases, in contrast, are fully ionized in solution and include hydroxide compounds such as NaOH.

So, the correct answer is A.