a substance has a ph value of 12.5. this value means the substance is: …

a substance has a ph value of 12.5. this value means the substance is: both an acid and a base neutral a base an acid

Brief Explanations

The pH scale ranges from 0 - 14. Substances with pH < 7 are acids, pH = 7 are neutral, and pH > 7 are bases. Since 12.5 > 7, the substance is a base.

C. A base