Acid-Base Titration Concepts

This video tutorial covers acid-base titrations, focusing on titration curves and pH calculations at various points. It explains how to determine the concentration of sulfuric acid using stoichiometry and equations, and discusses titration of monoprotic acids. The video also explores titration curves for strong and weak acids and bases, and solves pH problems in strong acid-base titrations.

What is the balanced chemical equation for the reaction between sulfuric acid and sodium hydroxide?

• H2SO4 + 2NaOH → NaHSO4 + 2H2O

• H2SO4 + 2NaOH → Na2SO4 + 2H2O

• H2SO4 + NaOH → NaHSO4 + H2O

• H2SO4 + NaOH → Na2SO4 + H2O

How can the concentration of H2SO4 be calculated using the M1V1 = M2V2 formula?

• By using the volume of NaOH only

• By ignoring the molar ratio between H2SO4 and NaOH

• By considering the 1:2 molar ratio between H2SO4 and NaOH

• By using the volume of H2SO4 only

What is a monoprotic acid?

• An acid that can donate three protons

• An acid that cannot donate any protons

• An acid that can donate one proton

• An acid that can donate two protons

In a strong acid-strong base titration, what is the pH at the equivalence point?

• Greater than 7

• Less than 7

• Exactly 7

• Depends on the concentration

How does the pH curve of a strong base-strong acid titration differ from that of a strong acid-strong base titration?

• It starts at a lower pH and ends at a higher pH

• It starts at a higher pH and ends at a lower pH

• It starts and ends at the same pH

• It remains constant throughout

For a weak acid-strong base titration, what is the pH at the equivalence point?

• Depends on the base

• Exactly 7

• Less than 7

• Greater than 7

What is the significance of the buffer region in a titration curve?

• It shows where the pH changes drastically

• It indicates the start of the titration

• It represents a region where pH remains relatively constant

• It marks the end of the titration

In a strong acid-strong base titration, what is the pH before any base is added?

• 14

• 7

• 0

• Depends on the base

What happens to the pH of a strong acid-strong base solution after the equivalence point?

• It remains constant

• It becomes neutral

• It decreases

• It increases

How is the pH calculated after adding excess base in a strong acid-strong base titration?

• Using the concentration of the acid

• Using the concentration of the excess base

• Using the initial concentration of the base

• Using the initial concentration of the acid