1.4 Energetics Flashcards Preview

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Flashcards in 1.4 Energetics Deck (10):
1

What is enthalpy change?

The heat change under certain pressures and conditions

2

Endothermic

Takes in energy (+∆H)

3

Exothermic

Gives out energy (-∆H)

4

Enthalpy of Combustion

Enthalpy change when 1 mole of a substance is completely burned in oxygen under standard states and conditions with all reactants and products in their standard states

5

Enthalpy of Reaction

Enthalpy change when a reaction occurs in the molar quantities shown in the chemical equation under standard states and conditions with all reactants and products in their standard states

6

Enthalpy of Formation

Enthalpy change when 1 mole of a compound is formed from its elements under standard states and conditions with all reactants and products in their standard states

7

Standard Condition

100 KPa, 298K

8

Mean Bond Enthalpy

Average energy per mole to break bond between two atoms

9

Calculate Heat Loss

Q=MC∆T
Q-KJ/mol
M-Mass
C-Specific Heat Capacity
∆T- Change in Temp

10

Hess' Law

The total enthalpy change for a reaction is independant of the route taken