Lecture Help Pages with Solutions-CSUDH Chemistry Department

This is the entry point to a set of pages aimed at aiding you in your studies of chemistry. The pages generate unique problems and also provide detailed solutions.

Important Issues

Dimensions Basic Concepts Atoms and Elements Gas Laws
Heat and Temperature Acids and Bases Solubility Chemical Formulas
Solutions Kinetics Stoichiometry Electrochemistry
Chemical Equilibrium Nomenclature The Scenario Thermochemistry
Structures and Bonding Advanced Topics Binary Numbers Coin Flipping
Organic Chemistry

Basic Concepts

Significant Figures
Direct and Inverse Relationships
Direct and Inverse Relationships-Calculations
Scientific Notation
Smaller, larger or the same?
Mass, density and volume
Wavelength, frequency and energy
Mass, density and volume
Exercises in Comparison
Further Exercises in Comparison
Which is it?
Mass, moles and volume-relating two elements

Converting Dimensions

Converting Volumes
Converting Mass
Converting Distance
Converting Densities
Converting Temperatures

Atoms and Elements

Protons,electrons and neutrons
Elements,moles and mass
Using Molar Volume
The Quantum Numbers
Electronic Structures of Atoms and Ions
Atomic Spectrum of Hydrogen
The de Broglie Wave Equation

Gas Laws

Boyle's Law
Charles' Law
Avogadro's Law
Combined Gas Law
The Ideal Gas Equation
Graham's Law
Raoult's Law-one volatile component
Raoult's Law-two volatile components


Molarity, moles and volume
Molarity, mass and volume
Osmotic Pressure
Freezing and Boiling Points-Aqueous Solutions

Heat and Temperature

Heat and Temperature Changes for water
Heat Transfer-water
Heat Transfer-water,word problems
Heat Transfer-water and another substance


The Thermochemical Equation
Hess' Law

Acids and Bases

Identifying acids and bases
pH, pOH, [H+], [OH-]
Basic relations(pH,pOH,etc)
Solutions of acids
Solutions of Acids and Bases-complete treatments
Acid-base reactions-calculation of K
Acids/Base Titrations
The Composition of Buffers
Properties of Buffers


Slightly Soluble Salts
Predicting Precipitation
Solubility and the common ion effect


Simple Naming
Names-Stock Notation
Names to formulas

Chemical Formulas

Calculating gfws
Mass, moles and gfw
Mass Relations from chemical formulas
General Treatment of relations from chemical formulas
Percent Composition
Empirical formulas
Combustion Analysis


Determining Orders and Rate Constants
Using the Rate Law
First Order Processes
The Arrhenius Equation


Balancing chemical equations
Mass Relationships in Chemical Reactions
Mole Relationships in Chemical Reactions
General Relationships in Chemical Reactions
Limiting Reagents
Calculations based on percent yields
Using the Limiting Reagent


Balancing Oxidation Reduction Reactions
Calculating Eo
Relating E,K and G
Faraday's Laws
The Nernst Equation

Chemical Equilibrium

Calculating K
Calculating K-advanced
Calculating an Equilibrium Concentration
Q vs K
The LeChatelier Effect
Combining Equilibria
Kc and Kp
Advanced Equilibria #1

Advanced Topics

Clausius-Clapeyron Equation
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