P1 titration

• What is the main purpose of a titration?

  To determine the concentration of an acid
• What type of reaction occurs during a titration between sulfuric acid and sodium hydroxide?

  Neutralization reaction
• If you know the volume of sodium hydroxide, what can you calculate using titration?

  The concentration of sulfuric acid
• What are the stages involved in carrying out a titration?

  1. Transfer 25 cm³ of sodium hydroxide to a conical flask.
  2. Add 5 drops of an indicator (e.g., methyl orange).
  3. Place the flask on a white tile for visibility.
  4. Fill a burette with sulfuric acid.
  5. Add acid to the alkali until neutral, swirling to mix.
  6. Read the volume of acid added from the burette.
  7. Repeat until two readings are within 0.1 cm³.
  8. Calculate the mean for final volume.
• What is the volume of sodium hydroxide used in the titration?

  25 cm³
• Why is a conical flask used in titration?

  To reduce the risk of splashing
• What should be used to draw liquid into a pipette?

  Pipette filler
• What happens if you blow liquid out of the pipette?

  You get an incorrect volume
• What color change indicates neutralization with methyl orange?

  From yellow to permanent red
• How should you add acid to the alkali during titration?

  Add drop by drop until neutral
• What is the meniscus in a burette?

  The curve of the liquid surface
• How should you read the volume from the burette?

  At the bottom of the meniscus
• Why do you repeat the titration several times?

  To obtain consistent readings
• What is the acceptable range for two titration readings?

  Within 0.1 cm³
• What do you do with the readings after multiple titrations?

  Calculate the mean for final volume
• What is the significance of learning the titration procedure?

  It's likely to appear in exams