1.4 Energetics Flashcards

1
Q

What is enthalpy change?

A

The heat change under certain pressures and conditions

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2
Q

Endothermic

A

Takes in energy (+∆H)

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3
Q

Exothermic

A

Gives out energy (-∆H)

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4
Q

Enthalpy of Combustion

A

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

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5
Q

Enthalpy of Reaction

A

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

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6
Q

Enthalpy of Formation

A

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

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7
Q

Standard Condition

A

100 KPa, 298K

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8
Q

Mean Bond Enthalpy

A

Average energy per mole to break bond between two atoms

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9
Q

Calculate Heat Loss

A
Q=MC∆T
Q-KJ/mol
M-Mass
C-Specific Heat Capacity
∆T- Change in Temp
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10
Q

Hess’ Law

A

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

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