This post is the list of PEKA experiments for SPM Chemistry Form 5 from Berry Berry Easy. Please familiarise with all these experiments from Form 5 Chemistry Chapter 4: Thermochemistry before conducting them so as to be better prepared. The list of experiments are as below:
Berry List of Chemistry Experiments (PEKA) Form 5 (Part 4)
Chapter 4 – Thermochemistry
List of PEKA experiments:
- Exothermic and endothermic reactions
- Heat of precipitation
- Heat of displacement
- Heat of neutralisation
- Heat of neutralisation of acids and alkalis of different strength
- Heat of neutralisation
- Heats of combustion for alcohols
| Number | Laboratory Work 4.1 |
| Pg. | 101 |
| Title | Exothermic and endothermic reactions |
| Aim | To identify an exothermic or endothermic reaction |
| Problem Statement | How to identify exothermic or endothermic reactions? |
| Hypothesis | Exothermic reaction occurs when the temperature of the reaction mixture increases.Endothermic reaction occurs when the temperature of the reaction mixture decreases. |
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| Number | Laboratory Work 4.2 |
| Pg. | 104 |
| Title | Heat of precipitation |
| Aim | To determine the heat of precipitation of silver chloride, AgCl |
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| Number | Laboratory Work 4.3 |
| Pg. | 106 |
| Title | Heat of displacement |
| Aim | To determine the heat of displacement of copper |
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| Number | Laboratory Work 4.4 |
| Pg. | 108 |
| Title | Heat of neutralisation |
| Aim | To determine the heats of neutralisation between strong acids and strong alkalis |
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| Number | Laboratory Work 4.5 |
| Pg. | 109 |
| Title | Heat of neutralisation of acids and alkalis of different strength |
| Aim | To determine and compare the heats of neutralisation between acids and alkalis of different strength |
| Problem Statement | How do the heat of neutralisation for reactions between acids and alkalis of different strength? |
| Hypothesis | The values of heat of neutralisation for reactions between strong acids and strong alkalis are higher than that of reactions between strong acids and weak alkalis / weak acids and strong alkalis or weak acids and weak alkalis. |
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| Number | Laboratory Work 4.6 |
| Pg. | 110 |
| Title | Heat of neutralisation |
| Aim | To determine and compare the heats of neutralisation between:
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| Problem Statement | How are the heats of neutralisation determined and compared? |
| Hypothesis | The heat of neutralisation between hydrochloric acid and sodium hydroxide is higher than the heat of neutralisation between ethanoic acid and ammonia solution. |
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| Number | Experiment 4.1 |
| Pg. | 112 |
| Title | Heats of combustion for alcohols |
| Aim | To determine the heats of combustion for alcohols |
| Problem Statement | Does alcohol with a higher number of carbon atoms per molecule have a higher heat of combustion? |
| Hypothesis | The higher the number of carbon atoms in the alcohol molecules, the higher is the heat of combustion. |
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