The pH of a solution is a measure of its acidity or alkalinity and is determined by the concentration of hydrogen ions H+ in the solution. The pH scale ranges from 0 to 14, with a pH of 7 being neutral, a pH less than 7 being acidic, and a pH greater than 7 being alkaline or basic.In this case, the pH meter reading is 7.5, which means the solution is slightly alkaline or basic. The temperature of the solution is 25C, which is a standard temperature for measuring pH. Therefore, the pH of the solution is 7.5.