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) the negative log of the concentration of h+ ions is 12. sodium hydroxide is a strong base. the negative log of the concentration of h+ ions is 2. sodium hydroxide is a strong acid. the negative log of the concentration of oh- ions is 12. sodium hydroxide is a strong base. the negative log of the concentration of oh- ions is 2. sodium hydroxide is a strong acid.

Explanation:

Step1: Recall pH definition

The formula for pH is $pH = -\log[H^+]$. Given that $pH = 12$, it means $-\log[H^+]=12$.

Step2: Identify base - acid nature

Sodium hydroxide ($NaOH$) is a strong base as it dissociates completely in water to release $OH^-$ ions.

Answer:

The negative log of the concentration of H+ ions is 12. Sodium hydroxide is a strong base.