Dr. K's Fundamentals of Analytical Chemistry

Name: Dr. K's Fundamentals of Analytical Chemistry
Rating: 4.4 (173 reviews)

An Overview of Analytical Chemistry Topics

Created byGregory Kowalczyk

Last updated 11/2024

English

What you'll learn

Basic topics of Analytical Chemistry typically covered in a Quantitative Analysis University course.
Understanding the difference between qualitative analysis and quantitative analysis.
The general steps followed when performing a chemical analysis.
How units and dimensional analysis applies to calculations in Analytical Chemistry.
Solution concentrations used in Analytical Chemistry.
How to prepare a specific volume of solution to a desired concentration.
The specific lab materials for successful analytical results: Analytical Balance, Volumetric Glassware, Burets, Pipets, Filtration Devices, Desiccator and more.
The difference between random and systematic errors and how to minimize them.
The difference between accuracy and precision.
Statistics as they relate to Analytical Chemistry, i.e., Gaussian Distribution and how to test for an outlier in a set of results.
Definition and Principles of Volumetric Analysis.
Stoichiometric calculations for titrations.
How to standardize a solution by titration.
The requirements for a chemical to be a Primary Standard.
Definition and steps involved with a Gravimetric Analysis.
Stoichiometric calculations for Gravimetric Analysis.
The Conditional Solubility Product for Gravimetric Analysis.
How to calculate the mass loss of the precipitate in a Gravimetric determination.
Defining ionic strength and how it affects the solubility of slightly soluble salts.
Activity and Activity Coefficients and how they affect Gravimetric analyses.
How to form precipitates in the lab with minimal contamination and why this is important.
The difference between strong and weak acids and bases and how to calculate the pH of their solutions.
Buffer solutions.
The applications of the Henderson-Hasselbalch equation.
Calculate the pH of amphiprotic species.
How to calculate the change in pH when an acid or base is added to a buffer solution.
Buffer Capacity.
How to make a buffer solution to a specific pH.
Determining the predominant species in an acidic or basic solution.
Derivation of Fractional Composition Equations for monoprotic and polyprotic acids.
Application of Fractional Composition Equations.
Stoichiometric calculations for a chemical analysis by titration.
How to construct a titration curve for neutralization reactions.
Indicators used in acid-base titrations, the titration error and how to calculate it.
Choice of indicator for an acid-base titration.
Complexometric Titrations.
Fractional Composition Equations for the ligand EDTA.
The Conditional Formation Constant for Complexometric Titrations.
How to construct Complexometric Titration Curves.
Auxiliary Complexing Agents and how and why they may be used in a Complexometric Titration.
Chemical Analysis by Complexometric Titration.
Indicators used in Complexometric Titrations.
Back Titrations.
How to Construct Titration Curves for Redox Titrations.
Redox Titration Indicators.
Requirements of Colorimetric Analysis.
How to construct and interpret a Beer's Law Graph.
How to prepare standard solutions for colorimetric analysis.
Steps involved in a Colorimetric Determination.
Chemical analysis by Colorimetric Analysis.

Course content

16 sections • 87 lectures • 23h 8m total length

What is Analytical Chemistry?14:55
In this lecture I define Analytical Chemistry and discuss the three general methods of analysis.
General Steps in a Chemical Analysis17:01
In this lecture, I discuss the general steps taken in a chemical analysis: Sampling, Sample Preparation and Analyzing the Sample.

Review of Units and Prefixes12:08
In this lecture I do a quick review of the 7 SI Base Units, Derived Units and prefixes used with the metric system.
Conversion between Units - Dimensional Analysis18:26
In this lecture I show how to apply dimensional analysis to converting units.
Solution Concentrations29:39
In this lecture, I review what is a solution and the concentration units of mass percent, parts per million and billion, molarity and formality.
Converting between Molarity and mass %15:28
We this lecture we see how density of the solution is needed to convert between these two concentration units going in either direction.
Preparing Solutions24:17
In this lecture I explain how to prepare solutions for analytical work and how to do the calculations.

The Analytical Balance12:10
In this lecture I discuss the differences between a top-loading balance and an analytical balance, when to use each, and the rules for using an analytical balance.
Volumetric Glassware9:02
Items included in volumetric glassware, the two types and rules for using are discussed in this lecture.
Burets7:24
In this lecture we discuss how to use and read a buret.
Volumetric Flasks2:02
A few more details about volumetric flasks are added in this lecture.
Pipets3:37
Details about the pipet are given in this lecture.
Filtration Devices8:29
In this lecture, three types of filtration devices are discussed.
The Desiccator4:03
In this lecture, the parts of a desiccator and use are explained.

Significant Figures13:06
A review of significant figures with emphasis on significant figures in measurements and when zeroes are significant.
Rounding Rules for Addition and Subtraction5:34
In this lecture, I explain how to round your answer to the correct number of significant figures when adding or subtracting.
Rounding Rules for Multiplication and Division6:27
In this lecture, I explain how to round your answer to the correct number of significant figures when multiplying or dividing.
Types of Errors12:56
In this lecture the definition and difference between random and systematic lab errors is discussed. Examples of both are given.
Precision and Accuracy14:28
In this lecture, I discuss what is meant by precision, accuracy, absolute error, relative error and how to minimize random error.

Principles of Volumetric Analysis16:00
In this lecture, I describe the requirements of volumetric analysis, list the requirements for a successful titration and discuss the two types of titrations: direct titrations and back titrations.
Titration Calculations - Stoichiometry12:27
In this lecture, I show how to calculate the mass % of an analyte in a sample by a titration.
Solution Standardization28:09
In this lecture, I explain how a solution is standardized to a known concentration, then used to determine the molarity of another reagent and the mass % of an analyte in an unknown sample.

Review of Equilibrium Chemistry26:42
In this lecture, I review how to set up the equilibrium constant equation for insoluble salts, weak acids and bases, and complex ions.
Steps in a Gravimetric Determination13:10
In this lecture, I list and discuss the steps involved in a gravimetric determination.
Calculation Examples of Gravimetric Analysis27:36
Calculations for two examples of gravimetric analysis are given in this lecture.
Measuring Mass and % Loss in a Gravimetric Determination25:57
In this lecture I explain how to calculate the mass and % loss of the precipitate from the slight dissolving of the slightly soluble precipitate.
The Effect of Ionic Strength on the Solubility of Insoluble Salts21:53
In this lecture I define ionic strength and explain why a high solution ionic strength increases the solubility of slightly soluble salts.
Activity and Activity Coefficients33:38
In this lecture, activity and activity coefficients are defined and explained and several applications are given.
Applying Activity to Gravimetric Analysis37:47
In this lecture, I show how to calculate mass and % loss of a precipitate taking activity into account.
Precipitation Processes, Types and Contamination23:46
In this lecture, I discuss the theory of precipitation, how impurities can contaminate your precipitate and steps you can take to form the purest precipitate.

Acids and Bases Defined12:03
In this lecture, I define Bronsted-Lowry acids and bases as well as explaining how to determine acid-base conjugate pairs.
Relationship between [H+], [OH-] and pH26:01
In this lecture, I review how to calculate hydronium ion concentrations and hydroxide ion concentrations from the Kw equation and then a quick review of pH calculations.
Strength of Acids and Bases30:24
In this lecture, I explain the difference between strong and weak acids and bases and how to recognize them. I also discuss the relationship between Ka and Kb for acid-base conjugate pairs.
pH of Strong Acids and Bases9:40
In this lecture, I review how to calculate the pH of strong acid and base solutions given their molar concentration.
pH of Weak Acids8:45
In this lecture, I review how to calculate the pH of a weak acid solution.
pH of Weak Bases7:09
In this lecture, I review how to calculate the pH of a weak base solution.

Buffer Solutions Defined7:38
In this lecture, I define buffer solutions, explain what they consist of and how they react to added acids and bases.
The Henderson-Hasselbalch Equation17:56
In this lecture, I review pKa and the Henderson-Hasselbalch equation showing how it is used to calculate the pH of buffer solutions and its limitations.
Buffers with Polyprotic Acids11:26
In this lecture, I explain how to make buffer solutions using polyprotic acids.
Calculating the pH of Amphiprotic Species29:27
In this lecture, I derive the equation needed to calculate the pH of amphiprotic species solutions. We also see how it can be simplified in most cases.
The Effect on pH of adding an Acid or Base to a Buffer12:55
In this lecture, I show how to calculate the change in pH of a buffer solution if an acid or base is added to it.
Buffer Capacity10:01
In this lecture, I define buffer capacity and show how to determine which solutions have higher buffer capacity.
Making Buffer Solutions to a Specific pH19:56
In this lecture, I discuss several different ways to make a buffer to a specific pH.

Determining the Predominant Species in a Solution25:36
In this lecture, I show how you can determine the predominant species in a weak acid or weak base equilibrium system.
Fractional Composition Equations for Monoprotic Acids19:06
In this lecture, I derive the fractional composition equations for a monoprotic acid and show what a graph of these equations would look like.
Fractional Composition Equations for Polyprotic Acids28:06
In this lecture, I derive the fractional composition equations for a polyprotic acid and show what a graph of these equations would look like.
Application of Fractional Composition Equations5:52
In this lecture, I explain how to calculate the molar concentrations of all species in a solution knowing the formal concentration of the acid or base and alpha values of each species.

Requirements

Completion of First and Second Semester General Chemistry.
A working knowledge of high school algebra including natural logarithms and exponential functions.
A desire and interest in learning about Analytical Chemistry.

Description

This course covers the fundamentals of an Analytical Chemistry course that one might take as a Chemistry major or minor. Ideally, students should have taken a year of General Chemistry as a prerequisite, as much of the material covered relies on a knowledge of equilibrium chemistry.

Students in this course have access to ample supplemental material, all of which will be found in the Resource Folders. In addition to the 23 hours of lectures, downloadable audio mp3 files of each lecture are included. For many lectures, a Practice Assignment where you can test your understanding of the material can be found in the Resource Folder. Also included is an answer key for each Practice Assignment. Any graphs, figures or tables presented in the lectures are also available as downloadable files. The content of this course is as extensive as all of my other Chemistry courses are that are also available on Udemy.

This course assumes that you have completed General Chemistry I and ideally General Chemistry II college courses. While you will not need to be familiar with all topics covered in those courses, you should have a good understanding of equilibrium Chemistry. As with my other intermediate courses that I have posted on Udemy, I have review sections for important chemical concepts that are needed for this course. Since this course covers the fundamentals of Analytical Chemistry, most instrumental techniques such as Atomic Absorption, UV-Visible Spectrophotometry, Infrared Spectroscopy, Chromatography and Nuclear Magnetic Resonance are not covered. Section 15 is an introduction to Instrumental Analysis where I introduce colorimetric analysis and Beer's Law, which is the basis for most Instrumental methods. Anyone who is interested in learning about various aspects of Analytical Chemistry may find this course beneficial, especially if you had no prior exposure to Analytical Chemistry in your studies.

Who this course is for:

Anyone who is curious about the basics of Analytical Chemistry.
Anyone who wants to learn the basics in preparation for a full semester course at the college or university level..

Dr. K's Fundamentals of Analytical Chemistry

What you'll learn

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Course content

Introduction2 lectures • 32min

Chemical Measurements5 lectures • 1hr 40min

The Analytical Chemist's Toolbox7 lectures • 47min

Measurement Math5 lectures • 53min

Statistical Treatment of Data2 lectures • 23min

Volumetric Analysis3 lectures • 57min

Gravimetric Analysis8 lectures • 3hr 30min

Acids and Bases6 lectures • 1hr 34min

Buffer Solutions7 lectures • 1hr 49min

Fractional Composition Equations4 lectures • 1hr 19min

Requirements

Description

Who this course is for: