Required Practical 2 - Measuring Enthalpy Change (AQA A-Level Chemistry): Flashcards
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Practise the cards
10 cards from this deck
Aim of dissolving anhydrous practical
Aim of dissolving anhydrous practical
Measure enthalpy change ()
Mass range of anhydrous used
Mass range of anhydrous used
3.90-4.10 g
Volume of deionised water used
Volume of deionised water used
25 cm³
Apparatus used as calorimeter
Apparatus used as calorimeter
Polystyrene cup
When to add to water (which minute)
When to add to water (which minute)
Fourth minute
Accuracy for recording temperature
Accuracy for recording temperature
1 decimal place
Formula for heat energy change
Formula for heat energy change
Specific heat capacity of water value
Specific heat capacity of water value
4.18 J g⁻¹ K⁻¹
Common error in calorimetry
Common error in calorimetry
Heat loss to surroundings
Improvement for higher temperature accuracy
Improvement for higher temperature accuracy
Use electronic temperature sensor