The enthalpy change when 1 mole of a substance is formed form its constituent elements where all products and reactants are in their standard states and under standard conditions, 100kPa and 298 kelvins.
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Define Standard Enthalpy Change of Combustion
The enthalpy change when one mole of a substance is burned completely in oxygen where all reactants and products are in standard states and under standard conditions, 100kPa and 298 kelvins.
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Define the term Enthalpy Change
The heat change of a reaction at a constant pressure.
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Define the term Rate of Reaction
How fast the reacts become the end products.
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Outline how to work out an enthalpy change of a reaction
Use the enthalpy chane equation q=m x c x change in T and then divide the answer by the moles.
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Outline how to work out an enthalpy change of a reaction in a solution
Use the enthalpy chane equation q=m x c x change in T then work out the moles in solution using concentration x volume (cm3) divided by 1000. Then divide the answer from the equation by the moles.
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States Hess's law
The enthalpy change of a reaction is independent of the route taken.
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delta H 1 = ? + ?
delta H1 = delta H2 + delta H3
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Define bond enthalpy
The energy needed to break a covalent bond with all species in the gaseous state.
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Other cards in this set
Card 2
Front
Define Standard Enthalpy Change of Combustion
Back
The enthalpy change when one mole of a substance is burned completely in oxygen where all reactants and products are in standard states and under standard conditions, 100kPa and 298 kelvins.
Card 3
Front
Define the term Enthalpy Change
Back
Card 4
Front
Define the term Rate of Reaction
Back
Card 5
Front
Outline how to work out an enthalpy change of a reaction
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