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pH and pOH

Q. Determine the [H+], the [OH-] the pOH and the Ka for a solution of a weak acid with a concentration of 0.035 M has a pH of 3.52.

Solved • May 6, 2020

pH and pOH

Q. a. Calculate the H3O+ concentration in an aqueous solution at 25 °C with an OH- concentration of 2.07x10-5 M. b. The value of Kw at 100 °C is 5.13x10-13. Calculate the H3O+ concentration from the above solution at 100 °C.

Solved • Apr 24, 2020

pH and pOH

Q. The Ka for benzoic acid is 6.5x10^-5. Calculate the pH of a 0.11 benzoic acid solution.

Solved • Apr 24, 2020

pH and pOH

Q. Calculate the pH at 25°C of a 0.035 M solution of a weak acid that has Ka = 1.4x10^-5.

Solved • Apr 24, 2020

pH and pOH

Q. Be sure to answer all parts. An aqueous solution of a strong base has a pH of 10.35 at 25°C. Calculate the concentration if the base is (a) LiOH (b) Ba(OH)2

Solved • Apr 24, 2020

pH and pOH

Q. Be sure to answer all parts. Calculate the pH of the following aqueous solutions at 25°C: a) 9.5x10-8 M NaOH b) 6.3x10-2 M LiOH c) 6.3x10-2 M Ba(OH)2

Solved • Apr 24, 2020

pH and pOH

Q. In a 2.0 L volumetric flask, a chemist prepares a solution (called solution A) by dissolving 2.50 g of potassium acetate (CH3COOK) in water. He then takes 25.0 mL of solution A, which he transfers to a 5.0 L volumetric flask which he fills with a dipstick with water. What is the pH of the resulting solution?

Solved • Apr 21, 2020