Bases increase the number of hydroxide ions (there are more hydroxide ions than hydrogen ions) and the resulting solution is said to be basic or alkaline.

Which pH has more hydroxide ions?

The pH of a solution is a measure of the concentration of hydrogen ions in the solution. A solution with a high number of hydrogen ions is acidic and has a low pH value. A solution with a high number of hydroxide ions is basic and has a high pH value. The pH scale ranges from 0 to 14, with a pH of 7 being neutral.

Do acids have a higher H+ or OH?

Saliva, coffee, lemon juice, tomato juice, and the acid in a battery are all acidic, so in all of them the concentration of H⁺ is higher than the concentration of OH^-. The more H⁺ in a solution the more acidic and the lower is its pH (See Figure 2.4.2 below).