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Leaving Cert Chemistry: Volumetric analysis

How often Volumetric analysis comes up on the Chemistry papers, every year it was asked, and questions to try.

HL Asked on 10 of the last 10 Higher Level papers, most recently in 2026. banker

OL Asked on 10 of the last 10 Ordinary Level papers, most recently in 2026. banker

June 2027 is the first exam on the new Chemistry course. These come from the 2016–2026 papers, so read them as a guide.

Volumetric analysis, Higher Level(9 marks)

Quick ones on Volumetric analysis.

(a)Indicator for titrating sodium carbonate (a weak base) with hydrochloric acid?
  1. Phenolphthalein
  2. Methyl orange
  3. Litmus
(b)25.0 cm3 of NaOH needs 20.0 cm3 of 0.10 mol l⁻¹ HCl. Concentration of the NaOH?
  1. 0.10 mol l⁻¹
  2. 0.125 mol l⁻¹
  3. 0.08 mol l⁻¹
(c)Colour change of methyl orange when acid is added from the burette to a base in the flask?
  1. Yellow to pink
  2. Colourless to pink
  3. Pink to colourless
Show the answers

(a) Methyl orange

(b) 0.08 mol l⁻¹

(c) Yellow to pink

Your turn: Higher Level questions on Volumetric analysis.

Higher Level

Asked on 10 of the last 10 Higher Level papers, most recently in 2026. banker

Every paper, year by year

YearWhere it came up
2026Q1
2025Q1
2024Q1
2023Q1
2022Q1
2021Q1
2019Q1
2018Q1
2017Q1
2016Q1

Links open the State Examinations Commission’s paper for that year.

More Volumetric analysis questions

Volumetric analysis, 2 marks

Colour change at the end point of an iodine-thiosulfate titration using starch?

  1. Colourless to pink
  2. Yellow to red
  3. Blue-black to colourless
Show the answer

Blue-black to colourless

Starch is added when the iodine is pale yellow. The blue-black colour disappears when the last of the iodine reacts.

Volumetric analysis, 2 marks

Why are iron tablets dissolved in dilute sulfuric acid, not water alone, before titration?

  1. To act as an indicator for the manganate(VII) titration
  2. To stop the iron(II) being oxidised to iron(III) by air
  3. To make the tablets fizz so that they break up faster
Show the answer

To stop the iron(II) being oxidised to iron(III) by air

The acid keeps the iron as Fe2+ and also supplies the H+ ions needed by the manganate(VII) in the titration.

Volumetric analysis, 3 marks

Why must the air bubble below the tap of a burette be removed before the first reading?

  1. It would be counted as liquid delivered
  2. It would react with the solution
  3. It changes the colour of the indicator
Show the answer

It would be counted as liquid delivered

If the bubble fills with liquid during the titration, the reading changes without any solution reaching the flask, so the titre would be too big.

Ordinary Level

Asked on 10 of the last 10 Ordinary Level papers, most recently in 2026. banker

Every paper, year by year

YearWhere it came up
2026Q2
2025Q2
2024Q2
2023Q2
2022Q2
2021Q2
2019Q2
2018Q2
2017Q2
2016Q2

Links open the State Examinations Commission’s paper for that year.

More Volumetric analysis questions

Volumetric analysis, 2 marks

Why is a white tile placed under the conical flask during a titration?

  1. To protect the bench from heat
  2. To keep the flask cool
  3. To see the colour change more clearly
Show the answer

To see the colour change more clearly

The white background makes the first lasting change in indicator colour easy to spot.

Volumetric analysis, 2 marks

Why is the funnel removed from the burette before the titration starts?

  1. It makes the solution cloudy as it drips
  2. Drops falling from it would change the reading
  3. It would react with the solution in the burette
Show the answer

Drops falling from it would change the reading

Any liquid left in the funnel could drip into the burette during the titration and give a wrong reading.

Volumetric analysis, 2 marks

Apparatus used to transfer exactly 25.0 cm3 of a solution into a conical flask?

  1. Pipette
  2. Graduated cylinder
  3. Beaker
Show the answer

Pipette

A pipette delivers one fixed volume very accurately. It is filled with a pipette filler, never by mouth.

Other Chemistry topics

All of Leaving Cert Chemistry