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Weak Acid Strong Base Titrations

Q. Calculate the pH of a solution that results from the mixing of 25.00 ml of 0.028 M benzoic acid with 15.00 ml of 0.025 M NaOH ( the Ka for benzoic acid is 6.3 x 10-5)

Solved • May 6, 2020

Weak Acid Strong Base Titrations

Q. A burette was filled with 50.00 ml of NaOH ans a titration was performed against an unknown acid dissolved in 100.00 ml of water which also contained 4 drops of phenolphthalein. Molarity of NaOH solution = 0.0925 M Initial volume in burette = 0.03 ml Volume used to reach the endpoint= 23.48 ml Grams of unknown acid used = 0.224 g pKa of the acid = 4.15 What was the gram equivalent weight of the acid?

Solved • May 1, 2020

Weak Acid Strong Base Titrations

Q. A burette was filled with 50.00 ml of NaOH ans a titration was performed against an unknown acid dissolved in 100.00 ml of water which also contained 4 drops of phenolphthalein. Molarity of NaOH solution = 0.0925 M Initial volume in burette = 0.03 ml Volume used to reach the endpoint= 23.48 ml Grams of unknown acid used = 0.224 g pKa of the acid = 4.15 How many moles of NaOH were required in the reaction?

Solved • May 1, 2020

Weak Acid Strong Base Titrations

Q. A burette was filled with 50.00 ml of NaOH ans a titration was performed against an unknown acid dissolved in 100.00 ml of water which also contained 4 drops of phenolphthalein. Molarity of NaOH solution = 0.0925 M Initial volume in burette = 0.03 ml Volume used to reach the endpoint= 23.48 ml Grams of unknown acid used = 0.224 g pKa of the acid = 4.15 What was the final volume of NaOH used?

Solved • May 1, 2020

Weak Acid Strong Base Titrations

Q. A burette was filled with 50.00 ml of NaOH ans a titration was performed against an unknown acid dissolved in 100.00 ml of water which also contained 4 drops of phenolphthalein. Molarity of NaOH solution = 0.0925 M Initial volume in burette = 0.03 ml Volume used to reach the endpoint= 23.48 ml Grams of unknown acid used = 0.224 g pKa of the acid = 4.15

Solved • Apr 30, 2020

Weak Acid Strong Base Titrations

Q. Calculate the pH of the solution that results from mixing 35.0 mL of 0.12 M formic acid and 70.0 mL of 0.060 M sodium hydroxide.

Solved • Apr 28, 2020

Weak Acid Strong Base Titrations

Q. HA is a weak acid with a Ka = 2.0 × 10-6 and a 40.0 mL sample of 0.10 M HA is titrated with 0.10 M NaOH. What is the pH after adding 25.0 mL NaOH?

Solved • Apr 28, 2020