A 0.025 L sample of oven cleaner has a pH of 12.60. What are. the concentrations of H+ and OH- in the cleaner? How many moles of OH- are present in the sample?

Question

A 0.025 L sample of oven cleaner has a pH of 12.60. What are. the concentrations of H⁺ and OH^- in the cleaner? How many moles of OH^- are present in the sample?

Answer 1

[H⁺] = 10^-pH = 10^-12.60 moles/liter

pOH = 14 - pH = 14 - 12.60 = 1.40

[OH^-] = 10^-pOH = 10^-1.40 moles/liter

To get the number of moles, multiply the concentration by the volume of the solution.