HEAT ENERGY CHANGE:
sData from calorimetry experiment can be used to calculate the heat energy change of a reaction:
sEQUATION:
s* m = Mass of Water or volume of Water
*If Water is not used, this is replaced by mass or volume of other solutions
ss
Example:
sEnergy from burning 0.5 g of Propane was transferred to 100 cm3 of Water to raise its temperature by 20°C. Calculate the heat energy change (in KJ)
sMass of Water = 100 cm3 Heat Capacity of Water = 4.2 j / g Temperature Rise = 20°C Energy Transferred = 100 x 4.2 x 20 = 8400 J *1000 J = 1 KJ So 8400 J = 8.4 KJ Energy Transferred = 8.4 KJ |
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