Which statement is true about a substance that has a pH value of 14?

A. It is a weak base.
B. It is a weak acid.
C. It is a strong base.
D. It is a strong acid.

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GinnyAnswer GinnyAnswer · Answer 1 · 2024-06-29T13:22:53-04:00

A substance with a pH value of 14 is classified as a strong base due to complete ionization in solution.

A substance with a pH value of 14 is a strong base. Strong bases are 100% ionized in solution, and their pH values are closer to 14.

Examples of strong bases include NaOH, KOH, and Ca(OH)2, which fully dissociate into hydroxide ions (OH-) when dissolved in water.

Conversely, weak bases like NH3 do not fully ionize in solution and are not listed as strong bases.

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