Acid-Base Titration Concepts

Professor Dave explains acid-base titration, a method to determine the concentration of an acid or base in a solution by measuring the volume needed to reach the equivalence point. He describes the titration curve, the role of indicators, and provides an example calculation using sulfuric acid and sodium hydroxide. The video concludes with a call to subscribe for more tutorials.

What is the main purpose of acid-base titration?

• To measure the pH of a solution

• To determine the precise volume of acid or base that will completely react with the other

• To identify the color change in a solution

• To calculate the molar mass of a substance

On a titration curve for an acidic solution, what is plotted against the volume of base added?

• pH

• Temperature

• Pressure

• Concentration

What happens to the pH as base is progressively added to an acidic solution?

• It remains constant

• It slowly decreases

• It slowly rises and then sharply rises towards the equivalence point

• It sharply decreases

What is the equivalence point in a titration?

• The point where the pH is highest

• The point where the pH is lowest

• The point where enough base has been added to neutralize the exact amount of acid in solution

• The point where the solution changes color

What is the equivalence point pH when neutralizing a strong acid with a strong base?

• 9

• 7

• 5

• 3

In the example problem, how much sulfuric acid is required to reach the equivalence point with 25 mL of sodium hydroxide?

• 25 mL

• 3.0 mL

• 11.6 mL

• 7.0 mL