What term for the negative logarithm of hydrogen ion concentration?

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Multiple Choice

What term for the negative logarithm of hydrogen ion concentration?

Explanation:
The term is pH. It’s defined as pH = -log10[H+], where [H+] is the molar concentration of hydrogen ions in the solution. Because of the negative log, larger hydrogen ion concentrations give smaller pH values (more acidic), while smaller concentrations give larger pH values (more basic). At 25 °C, the typical aqueous pH scale runs roughly from 0 to 14, with pH 7 being neutral. The related idea is pOH, which is the negative log of the hydroxide ion concentration, and pH and pOH sum to about 14 due to water’s autoionization. Acidity and basicity describe how readily a substance donates or accepts protons, respectively, but they are not the logarithmic measure of hydrogen ion concentration itself.

The term is pH. It’s defined as pH = -log10[H+], where [H+] is the molar concentration of hydrogen ions in the solution. Because of the negative log, larger hydrogen ion concentrations give smaller pH values (more acidic), while smaller concentrations give larger pH values (more basic). At 25 °C, the typical aqueous pH scale runs roughly from 0 to 14, with pH 7 being neutral. The related idea is pOH, which is the negative log of the hydroxide ion concentration, and pH and pOH sum to about 14 due to water’s autoionization. Acidity and basicity describe how readily a substance donates or accepts protons, respectively, but they are not the logarithmic measure of hydrogen ion concentration itself.

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