Measuring Enthalpy Changes (OCR A-Level Chemistry A): Flashcards
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Practise the cards
10 cards from this deck
Thermometer measures in enthalpy experiments
Thermometer measures in enthalpy experiments
Surroundings temperature change
Absolute zero in Kelvin
Absolute zero in Kelvin
0 K (or -273°C)
1 K temperature change equals in °C
1 K temperature change equals in °C
1°C (changes identical in K and °C)
Convert Celsius to Kelvin
Convert Celsius to Kelvin
Add 273
Specific heat capacity of water ()
Specific heat capacity of water ()
J g⁻¹ K⁻¹
Energy change equation
Energy change equation
Mass () in represents
Mass () in represents
Mass of surroundings that changes temperature
Why experimental combustion less exothermic than data book
Why experimental combustion less exothermic than data book
Heat loss, incomplete combustion, evaporation, non-standard
Purpose of cooling curve extrapolation
Purpose of cooling curve extrapolation
Correct for heat loss to get accurate max temp
Sign of when surroundings gain energy
Sign of when surroundings gain energy
Negative (exothermic)