enthalpy change

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  • Created by: Jaderose
  • Created on: 15-04-14 12:39
explain an exothermic reaction and give an example
give out energy an example is combustion for a fuel like methane
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explain endothermic give an example
they absorb energy from surroundings for example thermal decomposition calcium carbonate
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what are the standard conditions
298k and 100kpa/ 1atm
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standard enthalpy change of reaction
is the enthalpy change when the reaction occurs in molar quantities shown in the chemical equation under standard conditions in their standard states
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standard enthalpy of formation
is the enthalpy change when 1 mole of a compound is formed from its elements in their standard states under standard conditions
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standard enthalpy of combustion
is the enthalpy change when 1 mole of a substance is completely burnt in excess oxygen under standard conditions
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standard enthalpy of neutralisation
is the enthalpy change when 1 mole of water is formed from the neutralisation of an acid with excess base under standard conditions
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standard enthalpy change of atomisation
is the enthalpy change when 1 mole of an element in its standard state is converted to a gaseous atom
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Card 2

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explain endothermic give an example

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they absorb energy from surroundings for example thermal decomposition calcium carbonate

Card 3

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what are the standard conditions

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Card 4

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standard enthalpy change of reaction

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Card 5

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standard enthalpy of formation

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