A small amount of sodium hydroxide is added to water. When the chemical reaction reaches equilibrium, the pH is 12. Which statement and conclusion about sodium hydroxide is correct? (1 point)

Question

A small amount of sodium hydroxide is added to water. When the chemical reaction reaches equilibrium, the pH is 12. Which statement and conclusion about sodium hydroxide is correct? (1 point)
• Sodium hydroxide is a strong acid with a large number of OH- ion.
• Sodium hydroxide is a strong base with a large number of OH- ion.
• Sodium hydroxide is a strong base with a small number of OH- ions.
• Sodium hydroxide is a strong acid with a small number of OH- ions.

GPT-4o mini · Answer

The correct statement and conclusion about sodium hydroxide in this context is:

Sodium hydroxide is a strong base with a large number of OH- ions.

This is supported by the fact that a pH of 12 indicates a basic solution, which corresponds to a significant concentration of hydroxide ions (OH-) in the solution, as sodium hydroxide completely dissociates in water into sodium ions (Na+) and hydroxide ions (OH-).