Last updated on Jun 09, 2026

2 – Detecting the Presence of Anions (LC 2027) (Leaving Cert Chemistry): Quizzes

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13 questions from this quiz

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2 – Detecting the Presence of Anions (LC 2027) (Leaving Cert Chemistry): Quizzes

Practise the questions

What does qualitative analysis help determine about a solution?

Which reagent is used to detect chloride ions (Cl−\text{Cl}^-Cl−)?

What colour precipitate forms when silver nitrate is added to chloride ions?

What happens when dilute ammonia is added to silver chloride precipitate?

Which reagent detects both sulfate (SO42−\text{SO}_4^{2-}SO42−​) and sulfite (SO32−\text{SO}_3^{2-}SO32−​) ions?

Which precipitate dissolves when dilute hydrochloric acid is added?

What gas is produced when acid reacts with carbonate ions (CO32−\text{CO}_3^{2-}CO32−​)?

What observation confirms carbon dioxide in the limewater test?

What happens when magnesium sulfate is added to carbonate (CO32−\text{CO}_3^{2-}CO32−​) ions?

Why can't precipitation reactions detect nitrate (NO3−\text{NO}_3^-NO3−​) ions?

What observation confirms the presence of nitrate ions in the Brown Ring Test?

What type of sulfuric acid is required for the Brown Ring Test for nitrates?

What colour precipitate confirms the presence of phosphate (PO43−\text{PO}_4^{3-}PO43−​) ions?

Explore Leaving Cert Chemistry Revision Notes by Topics

Overview of Experiments (LC 2026)

Overview of Experiments (LC 2026)

1 – Carrying Out Flame Tests (LC 2027)

1 – Carrying Out Flame Tests (LC 2027)

2 – Detecting the Presence of Anions (LC 2027)

2 – Detecting the Presence of Anions (LC 2027)

3 – Measuring the Relative Molecular Mass of a Volatile Liquid (LC 2027)

3 – Measuring the Relative Molecular Mass of a Volatile Liquid (LC 2027)

4 – Verifying the Law of Conservation of Mass (LC 2027)

4 – Verifying the Law of Conservation of Mass (LC 2027)

5 – Investigating Decreases in Concentration (LC 2027)

5 – Investigating Decreases in Concentration (LC 2027)

6 – Preparing Sodium Carbonate (LC 2027)

6 – Preparing Sodium Carbonate (LC 2027)

7 – Standardising a Hydrochloric Acid Solution (LC 2027)

7 – Standardising a Hydrochloric Acid Solution (LC 2027)

8 – Standardising a Sodium Hydroxide Solution (LC 2027)

8 – Standardising a Sodium Hydroxide Solution (LC 2027)

9 – Determining the Concentration of an Ammonia Solution (LC 2027)

9 – Determining the Concentration of an Ammonia Solution (LC 2027)

10 – Determining the Concentration of Ethanoic Acid in Vinegar (LC 2027)

10 – Determining the Concentration of Ethanoic Acid in Vinegar (LC 2027)

11 – Standardising a Potassium Permanganate Solution (LC 2027)

11 – Standardising a Potassium Permanganate Solution (LC 2027)

12 – Determining the Percentage of Elemental Iron in an Iron Tablet (LC 2027)

12 – Determining the Percentage of Elemental Iron in an Iron Tablet (LC 2027)

13 – Standardising a Sodium Thiosulfate Solution (LC 2027)

13 – Standardising a Sodium Thiosulfate Solution (LC 2027)

14 – Investigating the Rate of Decomposition of Hydrogen Peroxide (LC 2027)

14 – Investigating the Rate of Decomposition of Hydrogen Peroxide (LC 2027)

15 – Investigating the Effect of Surface Area on Reaction Rates (LC 2027)

15 – Investigating the Effect of Surface Area on Reaction Rates (LC 2027)

16 – Studying the Effect of Concentration on Reaction Rate (LC 2027)

16 – Studying the Effect of Concentration on Reaction Rate (LC 2027)

17 – Studying the Effect of Temperature on Reaction Rate (LC 2027)

17 – Studying the Effect of Temperature on Reaction Rate (LC 2027)

18 – Investigating Effects on the State of Equilibrium (LC 2027)

18 – Investigating Effects on the State of Equilibrium (LC 2027)

19 – Investigating the Heat of Combustion of Alcohols (LC 2027)

19 – Investigating the Heat of Combustion of Alcohols (LC 2027)

20 – Determining the Enthalpy of Reaction of a Neutralisation Reaction (LC 2027)

20 – Determining the Enthalpy of Reaction of a Neutralisation Reaction (LC 2027)

21 – Investigating Galvanic Cells (LC 2027)

21 – Investigating Galvanic Cells (LC 2027)

22 – Investigating with Inert Electrodes (LC 2027)

22 – Investigating with Inert Electrodes (LC 2027)

23 – Preparing & Investigating Ethene (LC 2027)

23 – Preparing & Investigating Ethene (LC 2027)

24 – Preparing an Ester (LC 2027)

24 – Preparing an Ester (LC 2027)

25 – Preparing Soap (LC 2027)

25 – Preparing Soap (LC 2027)

26 – Distinguishing Between Aldehydes and Ketones (LC 2027)

26 – Distinguishing Between Aldehydes and Ketones (LC 2027)

27 – Synthesising & Investigating Benzoic Acid (LC 2027)

27 – Synthesising & Investigating Benzoic Acid (LC 2027)

Explore Leaving Cert Chemistry Model Answers by Topics

Overview of Experiments (LC 2026)

Overview of Experiments (LC 2026)

1 – Carrying Out Flame Tests (LC 2027)

1 – Carrying Out Flame Tests (LC 2027)

2 – Detecting the Presence of Anions (LC 2027)

2 – Detecting the Presence of Anions (LC 2027)

3 – Measuring the Relative Molecular Mass of a Volatile Liquid (LC 2027)

Which reagent is used to detect chloride ions ( $\text{Cl}^-$ )?

Which reagent detects both sulfate ( $\text{SO}_4^{2-}$ ) and sulfite ( $\text{SO}_3^{2-}$ ) ions?

What gas is produced when acid reacts with carbonate ions ( $\text{CO}_3^{2-}$ )?

What happens when magnesium sulfate is added to carbonate ( $\text{CO}_3^{2-}$ ) ions?

Why can't precipitation reactions detect nitrate ( $\text{NO}_3^-$ ) ions?

What colour precipitate confirms the presence of phosphate ( $\text{PO}_4^{3-}$ ) ions?