Last updated on Jun 09, 2026

5 – Investigating Decreases in Concentration (LC 2027) (Leaving Cert Chemistry): Quizzes

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12 questions from this quiz

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5 – Investigating Decreases in Concentration (LC 2027) (Leaving Cert Chemistry): Quizzes

Practise the questions

What is a serial dilution?

In a 1:10 dilution ratio, what happens to the original concentration?

Why is potassium permanganate ideal for the serial dilution experiment?

What volumes are used in each dilution step of the KMnO4\text{KMnO}_4KMnO4​ experiment?

Which equipment is used for accurate volume measurements in serial dilutions?

How many test tubes are prepared in the potassium permanganate experiment?

What colour is observed in test tube 5 after serial dilutions?

If the stock solution is 0.05 M0.05 \text{ M}0.05 M, what is the concentration in test tube 1?

By what factor does each 1:10 dilution step reduce the concentration?

What is the concentration in test tube 3 if starting with 0.05 M0.05 \text{ M}0.05 M?

In the formula Cn=C010nC_n = \frac{C_0}{10^n}Cn​=10nC0​​, what does nnn represent?

Which is a practical application of serial dilutions?

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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)

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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)

What volumes are used in each dilution step of the $\text{KMnO}_4$ experiment?

If the stock solution is $0.05 \text{ M}$ , what is the concentration in test tube 1?

What is the concentration in test tube 3 if starting with $0.05 \text{ M}$ ?

In the formula $C_n = \frac{C_0}{10^n}$ , what does $n$ represent?