[CHEM 102] - Midterm Exam Guide - Ultimate 15 pages long Study Guide!

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Drexel
CHEM 102
MIDTERM EXAM
STUDY GUIDE
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CHEM 102: General Chemistry II
Spencer Kociba
Drexel University
Lecture 4 (01/18/17)
Boiling point: the temperature at which vapor pressure=atmospheric pressure
■ Red: add energy (increase temperature)
■ Blue: remove energy (decrease temperature)
Heat capacity
Larger heat capacity=a smaller temperature change when energy is added
1- Solid
CΔTq =ms
2- Solid and liquid ( (kJ/mol))HΔfusion
Partial overcoming of IMFs
3- Liquid
CΔTq =ml
4- Liquid and gas ( (kJ/mol))HΔfusion
Totally overcoming IMFs
5- Gas
CΔTq =mg
The solid phase of a pure substance is favored at high pressures and lower
temperatures
Phase Diagrams
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Along the black lines is where matter exists in two states at once (solid
and liquid, liquid and gas, solid and gas)
Triple point: temperature where all three phases coexist
Critical point: the temperature and pressure is in between a liquid and
a gas (high temperature and high pressure)
Supercritical fluid: where pressures and temperatures are both above
the critical point
Lecture 5 (01/20/17)
Chapter 22: Organic Chemistry
Molecular formula: lists elements involved and their quantity
Structural formula: lists groups of elements bonded in a molecule
Structural isomers: molecules that have the same molecular formula but
different structures (changes how the molecules react and other properties)
Naming Organic Substances (see Table 22.5)
Steps
Parent chain (the longest continued sequence of Carbon
atoms in a molecule) is the base name
Identify how many carbon atoms are in this chain
Number carbon atoms left to right or right to left, this
will help identify locations of side chains (lowest
number is used for locations of the side chains)
Locate side chains, if any (branches off of the main chain)
Identify how many identical chains there are and add
prefix
In front of this prefix, put location number(s) followed by
a hyphen
Ends in “-yl”
Identify type of organic substance and use appropriate suffix
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