Flashcards
DF 1. Getting Energy From Fuels
Cards in this deck (10)
- 1What type of reaction does the diagram show?An exothermic reaction.
- 2What type of reaction does the diagram show?An endothermic reaction.
- 3How do you convert from degrees celsius to Kelvin?Add 273 to your value of degrees celsius.
- 4Define: Endothermic ReactionEndothermic Reaction:
A reaction that takes in energy and cools the surroundings. - 5Define: Exothermic ReactionExothermic Reaction:
A reaction that gives out energy and heats the surroundings. - 6Describe the enthalpy changes for an exothermic and an endothermic reaction.The enthalpy change for an exothermic reaction is always negative.
The enthalpy change for an endothermic reaction is always positive. - 7What are considered the 'standard conditions' of a reaction?Temperature: 298K
Pressure: 1atm
Concentration: 1mol dm^-3
Standard States - 8Define the standard enthalpy change of a reaction.Standard Enthalpy Change of a Reaction:
The enthalpy changes when molar quantities of reactants as stated in the equation react together under standard conditions. - 9Define the standard enthalpy change of combustion.Standard Enthalpy Change of Combustion:
The enthalpy change that occurs when one mole of a substance is burnt completely in oxygen under standard conditions and in standard states. - 10Define the standard enthalpy change of formation.Standard Enthalpy Change of Formation:
The enthalpy change when one mole of a compound is formed from its elements under standard conditions in standard states.
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- AS level Chemistry Flashcards on DF 1. Getting Energy From Fuels, created by Melissa O'Mahony on 09/03/2017.
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- Melissa O'Mahony
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