UNIT 5-ENTHALPY CHANGES🤎

Question 1

define an exothermic reaction, describe the delta h and temperature of the surroundings

Answer 1

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Question 2

define an endothermic reaction, describe the delta h and temperature of the surroundings

Answer 2

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Question 3

draw and explain four diagrams: two showing the energy change throughout an exothermic and endothermic reaction and two energy level/reaction pathway diagrams for an exothermic and endothermic reaction

Answer 3

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Question 4

state three standard standard conditions

Answer 4

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Question 5

define the following terms: enthalpy change of; reaction, formation, combustion, neutralisation, state whether each change is exothermic, endothermic or both

Answer 5

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Question 5

why do energy transfers occur?

Answer 5

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Question 6

calculate the enthalpy change of reaction of water (example question in one note)

Answer 6

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Question 7

calculate average bond enthalpy (example question in one note)

Answer 7

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Question 8

give the equation for heat transferred, use the equation to do an question (question in one note)

Answer 8

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Question 9

explain hess’s law and draw a general energy cycle

Answer 9

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Question 10

calculate enthalpy change of formation from enthalpy change of reaction (question in one note)

Answer 10

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Question 11

calculate enthalpy change of formation from enthalpy change of combustion (question in one note)

Answer 11

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