CHEM 1008 PRACTICAL 1 - Titration
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Questions and Answers

What should be done if a dark pink color persists during the titration process?

  • Add more deionised water to dilute the solution
  • Stop the titration and record the final burette reading (correct)
  • Continue adding the titrant drop by drop
  • Add more indicator solution

    • Why is it important not to add too much indicator in volumetric analysis?

  • To make the titration process longer
  • To speed up the reaction between the analyte and titrant
  • To avoid affecting the volume required to reach equivalence (correct)
  • To prevent the appearance of unwanted colors in the solution

    • How can it be determined that titres are concordant in a titration process?

  • By measuring the temperature of the solution
  • When the pink color appears immediately
  • By ensuring there are no drops left in the burette
  • When the differences between initial and final burette readings are within a certain range (correct)

    • What is the purpose of adding a split or half-drop during the titration process?

    <p>To increase the accuracy of determining the end point</p> Signup and view all the answers

    Why should both pipette and burette be rinsed after finishing a set of titrations?

    <p>To prevent contamination of solutions</p> Signup and view all the answers

    What is the significance of observing a light pink color that disappears on swirling during titration?

    <p>It indicates the end point has been reached</p> Signup and view all the answers

    What is the correct volume of deionized water that should be pipetted into the beaker?

    <p>25.00 mL</p> Signup and view all the answers

    How many times should the conical flask be rinsed with the sodium hydroxide solution?

    <p>Twice</p> Signup and view all the answers

    What should be added to the conical flask after pipetting the unknown acid solution?

    <p>Phenolphthalein indicator</p> Signup and view all the answers

    What should be labeled on the conical flask after adding the sodium hydroxide solution?

    <p>'NaOH'</p> Signup and view all the answers

    How should the burette be filled with the NaOH solution?

    <p>Use a funnel, filling below eye level</p> Signup and view all the answers

    What is the recommended number of times to practice pipetting deionized water into the beaker?

    <p>At least three times</p> Signup and view all the answers

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