Worksheet: Titrations

In this worksheet, we will practice describing the correct method for volumetric titrations, calculating concentrations and troubleshooting errors.

Q1:

During a titration, which of the following actions would improve the accuracy of the measurement?

  • AFilling the buret to the highest graduation mark.
  • BRinsing the inside of the analyte flask with additional solvent before each addition of titrant.
  • CSwirling a basic analyte solution for longer after each addition of acid titrant.
  • DMixing the solution with a glass rod after each addition of titrant.
  • EAdding five more drops of indicator to the analyte.

Q2:

Which of the following quantities does not need to be accurately measured during a titration?

  • ADensity of the titrant
  • BInitial buret reading
  • CTitrant concentration
  • DFinal buret reading

Q3:

When performing a titration, in which item of glassware is the analyte usually placed?

  • AVolumetric flask
  • BBuret
  • CVolumetric pipet
  • DRound-bottom flask
  • EErlenmeyer flask

Q4:

When performing a titration, in which item of glassware are stock solutions prepared?

  • ARound-bottom flask
  • BErlenmeyer flask
  • CVolumetric flask
  • DVolumetric pipette
  • EBurette

Q5:

When performing a titration, in which item of glassware is the titrant placed?

  • AErlenmeyer flask
  • BRound-bottom flask
  • CVolumetric pipette
  • DBuret
  • EVolumetric flask

Q6:

For a titration to be effective, the reaction must be rapid, and the yield of the reaction must essentially be 100%. For a good titration reaction, what is the value of 𝐾c?

  • A 0 < 𝐾 1 c
  • B 𝐾 = 0 c
  • C 𝐾 1 c
  • D 𝐾 0 c
  • E 𝐾 1 c

Q7:

A student performs a titration, pouring one liquid into the buret from a beaker and pipetting a second liquid into the Erlenmeyer flask, as shown.

What name is given to the liquid poured into the buret?

  • AIndicator
  • BTitrant
  • CTiter
  • DTitrand
  • EFiltrate

What name is given to the liquid pipetted into the Erlenmeyer flask?

  • AFiltrate
  • BTitrant
  • CIndicator
  • DTiter
  • EAnalyte

What name is given to the liquid already present in the Erlenmeyer flask?

  • ATitrand
  • BTitrant
  • CIndicator
  • DFiltrate
  • ETiter

In what way has the apparatus been incorrectly assembled?

  • AThe Erlenmeyer flask has not been clamped.
  • BThe buret tap is open.
  • CThe liquid in the Erlenmeyer flask should be stirred using a stir bar.
  • DThe funnel in the buret is too long, preventing the buret from being completely filled.
  • ELiquid should be added to the Erlenmeyer flask using a volumetric pipet.

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