CHEM 120: Introduction to Inorganic Chemistry

Chapters Covered and Test dates

Chapter 8. Chemical and Physical Change: Energy, Rate, and Equilibrium

Thermodynamics

Chemical reaction and energy

Universe

First law of thermodynamics

Thermochemistry

Exothermic processes

Exothermic rxn

Endothermic Reaction

Endothermic process

Enthalpy, H

Enthalpy, H

Slide 15

Enthalpy, H

Slide 17

Are these exo- or endothermic?

Spontaneous Processes

"We want to come up..."

"Look at H₂O(s)"

Entropy, S

Entropy info

"For a rxn:"

Get entropy increases

Is there an entropy increase when

Does a positive entropy change insure a spontaneous process

Second law of thermodynamics

"DG = D H -..."

How does DG = D H - T D S
work?

DG = D H - T D S

DG = D H - T D S

Calorimetry: how to measure heat changes in reactions

Slide 34

To calculate the amt of heat (Q) absorbed or released

"Units of SH : cal..."

"To raise the temp of..."

Fuel value

"8.8:"

Kinetics (Reaction Rates)

"Look at H₂(g)"

"A molecule that is moving..."

Activation energy, E_a

Slide 44

Factors that affect reaction rate

"II."

"III."

"IV."

"V."

Slide 50

Mathematical representation of reaction rate

"For a rate law where"

Some sample rate laws

"2NO(g)"

"A reaction is found to..."

"Write the general form of..."