Acid/Base Problem Examples

Notes from overhead: ______

+ - -14 Kw=[H ] [OH ] Kw always equals 1.0x10 -4 Ex 1)A 1.0x10 M solution of HNO3 has been prepared for a laboratory experiment. + - Calculate the [H30 ] and the [OH ]. Given: Formula: Solving for: Hints:______Ex 2)Determine the hydronium and hydroxide ion concentrations in a solution that is 3.0x10-2M NaOH. Given: Formula: Solving for: Hints:______pH=-log[H+] [H+]=10-pH pH+pOH=14.0 pOH=-log[OH-] [OH-]=10-pOH Ex 3)What is the pH of a 1.0x10-3M NaOH solution? Given: Formula: Solving for: Hints:______+ -5 Ex 4)What is the pH of a solution if the [H30 ] is 3.4x10 M? Given: Formula: Solving for: Hints:______Ex 5) Determine the hydronium ion concentration of an aqueous solution that has a pH of 4.0. Given: Formula: Solving for: Hints:______Ex 6) The pH of a solution is measured and determine to be 7.52. Find the hydronium ion concentration, hydroxide ion concentration, and whether it is acidic or basic. Given: Formula: Solving for: Hints:______Homework 1. Determine the hydronium and hydroxide ion concentrations in a solution that is -3 1.0x10 M HNO3. Given: Formula: Solving for:

2. Determine the hydronium and hydroxide ion concentrations in a solution that is 3.0x10-2M NaOH. Given: Formula: Solving for:

3. Determine the pOH of 1x10-4 M NaOH. Given: Formula: Solving for:

4. Determine the pH of a solution with a hydronium ion concentration of 2.5x10-2M. Given: Formula: Solving for:

------Titrations Notes from overhead: ______

Ex 7) In a titration, 27.4mL of 0.0154M Ba(OH)2 is added to a 20.0mL sample of HCl solution of unknown concentration. What is the molarity of the acid? Given: Formula: Solving for: