PH Calculations

Front

What is pH?

Back

pH is a measure of the hydrogen ion concentration in a solution, indicating its acidity or basicity on a scale of 0 to 14.

Front

What is the formula to calculate pH from [H₃O⁺]?

Back

pH = -log[H₃O⁺]

Front

What is the relationship between pH and pOH?

Back

pH + pOH = 14

Front

How do you calculate [H₃O⁺] from pH?

Back

[H₃O⁺] = 10^(-pH) M

Front

What is the pH of a neutral solution at 25°C?

Back

The pH of a neutral solution at 25°C is 7.

Front

What does a pH less than 7 indicate?

Back

A pH less than 7 indicates an acidic solution.

Front

What does a pH greater than 7 indicate?

Back

A pH greater than 7 indicates a basic (alkaline) solution.

Front

If [H₃O⁺] = 1 x 10⁻³ M, what is the pH?

Back

pH = 3

Front

If the pH of a solution is 8, what is the [H₃O⁺]?

Back

[H₃O⁺] = 1.0 x 10⁻⁸ M

Front

What is the pOH of a solution with a pH of 5?

Back

pOH = 14 - pH = 9