H⁺ represents hydrogen ions in chemistry. In aqueous solutions, these are responsible for the acidity of the solution and determine its pH value.
H⁺ cheat sheet for homework
Hydroxide ions are found in basic solutions and combine with H⁺ ions to form water molecules.
A solution that has an excess of H⁺ ions compared to OH⁻ ions.
A solution that has an excess of OH⁻ ions compared to H⁺ ions.