An aqueous solution contains 0.100 M NaOH at 25.0 °C. The pH of the solution is ________.

Question

Quizplus · Accepted Answer

NaOH is a strong base and completely disassociates in water to form Na+ and OH- ions. The concentration of OH- ions in a 0.100 M NaOH solution is also 0.100 M. To calculate the pH, we use the equation: pH = 14 - pOH, where pOH = -log[OH-]. 
pOH = -log(0.100) = 1 
pH = 14 - pOH = 13.00. Therefore, the pH of the solution is 13.00.

An Aqueous Solution Contains 0