What is different about a enthalpy cycle using enthalpy change of combustion?
The direction of the arrows (goes from reactants and products to the common combustion products)
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What is different about a enthalpy cycle using enthalpy change of formation?
The direction of the arrows (goes from common elements to the reactants and products)
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What is specific heat capacity (c)?
The energy required to raise the temperature of 1 g of a substance by 1 K
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What is the equation for calculation of enthalpy change and what does each symbol stand for?
..
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What are the two main sources of error in the experimental determination of enthalphy change of combustion?
- Heat loss to surroundings - Incomplete combustion of the fuel
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*6 The combustion of 1.50 g of ethanol raised the temp of 500 cm3 of water by 19.5 degrees c. Calculate the molar enthalpy change of combustion of ethanol C2H5OH (c=4.18JgK-1)
-1250 kJ
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What is average bond enthalpy?
The average value of the enthalpy required to break a given type of covalent bond in the molecules of a gaseous species
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What is bond enthalpy?
The enthalpy required to break a covalent X-Y bond into X and Y atoms, all in the gas phase
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Other cards in this set
Card 2
Front
What is the symbol for enthalpy?
Back
H
Card 3
Front
What is enthalpy change?
Back
Card 4
Front
What is the symbol of enthalpy change
Back
Card 5
Front
What is the standard enthalpy change of formation?
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