pH, pOH, OH-, H3O+, Molarity

Front

What is pH?

Back

pH is a measure of the hydrogen ion concentration in a solution, indicating its acidity or alkalinity. It is calculated as pH = -log[H+].

Front

What is pOH?

Back

pOH is a measure of the hydroxide ion concentration in a solution, indicating its basicity. It is calculated as pOH = -log[OH-].

Front

What is the relationship between pH and pOH?

Back

pH + pOH = 14 at 25°C.

Front

What is the formula to calculate molarity?

Back

Molarity (M) = moles of solute / liters of solution.

Front

How do you calculate the concentration of H3O+ from pH?

Back

[H3O+] = 10^(-pH).

Front

How do you calculate the concentration of OH- from pOH?

Back

[OH-] = 10^(-pOH).

Front

If the [H+] of a solution is 1.0 x 10^-2 mol/L, what is the pH?

Back

pH = 2.

Front

If the pH of a solution is 4.0, what is the pOH?

Back

pOH = 10.0.

Front

What is the hydronium ion concentration if the pH is 7.17?

Back

[H3O+] = 6.76 x 10^-8 M.

Front

What is the hydronium ion concentration if the pOH is 9.0?

Back

[H3O+] = 1.0 x 10^-5 M.