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Summary - Unit 8 - Energetics I (9CH0) £2.99   Add to cart

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Summary - Unit 8 - Energetics I (9CH0)

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A summary of topic 8, organised so the notes are easy to understand. The notes are on slides, so they can be printed out and used as revision cards or posters, for revision on the go. The notes cross-reference the specification so it is easy to see where each bit of information has come from. They ...

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  • August 5, 2024
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exothermic endothermic H(prod)>H(react)
H(react)>H(prod) ∆H = +ve
Reaction profile ∆H = -ve Reaction profile ∆T = -ve
∆T = +ve Energy taken in
Energy given out from surroundings
from system to into system as
surroundings as heat
heat
Examples:
Examples: melting, thermal
combustion, decomposition,
freezing, photosynthesis
respiration

Enthalpy level Enthalpy level
diagram diagram

∆H = H(prod)-
H(react)
Enthaply change
= the heat energy
change measured
at a constant
pressure.

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