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1. Chemical Measurements(0)

SI Units
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Metric Prefixes
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Chemical Concentrations
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Volumetric Analysis
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Volumetric Titrations
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2. Tools of the Trade(0)

Safety & Labels
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Buoyancy
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Thermal Dependency
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Volumetric Instruments
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Filtration & Evaporation
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3. Experimental Error(0)

Significant Figures
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Addition and Subtraction Operations
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Multiplication and Division Operations
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Logarithm and Anti-Logarithm Operations
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Precision and Accuracy
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Types of Errors
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Uncertainty
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4 & 5. Statistics, Quality Assurance and Calibration Methods(0)

Mean Evaluation
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The Gaussian Distribution
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Confidence Intervals
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Hypothesis Testing (t-Test)
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Analysis of Variance (f-Test)
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Detection of Gross Errors
(0)

6. Chemical Equilibrium(0)

The Equilibrium State
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The Reaction Quotient
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Le Chatelier's Principle
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Chemical Thermodynamics: Enthalpy
(0)

Chemical Thermodynamics: Entropy
(0)

Chemical Thermodynamics: Gibbs Free Energy
(0)

Solubilty Product Constant
(0)

Protic Acids and Bases
(0)

The pH Scale
(0)

Acid Strength
(0)

7. Activity and the Systematic Treatment of Equilibrium(0)

Ionic Strength of Soluble Salts
(0)

Activity Coefficients
(0)

pH Revisited
(0)

8. Monoprotic Acid-Base Equilibria(0)

Arrhenius Acids and Bases
(0)

Bronsted-Lowry Acids and Bases
(0)

Lewis Acids and Bases
(0)

Auto-Ionization
(0)

Ka and Kb of compounds
(0)

Weak Acid-Base Equilibria
(0)

Ionic Salts of Weak Acids and Bases
(0)

Buffers
(0)

9. Polyprotic Acid-Base Equilibria(0)

Diprotic Acids and Bases
(0)

Polyprotic Acids and Bases
(0)

Diprotic Buffers
(0)

Polyprotic Buffers
(0)

Principal Species
(0)

Isoelectric and Isoionic pH
(0)

10. Acid-Base Titrations(0)

Strong Acid-Strong Base Titrations
(0)

Weak Acid-Strong Base Titrations
(0)

Weak Base-Strong Acid Titrations
(0)

Diprotic Acid Titrations
(0)

Polyprotic Titrations
(0)

11. EDTA Titrations(0)

Metal Chelate Complexes
(0)

EDTA
(0)

EDTA Titration Curves
(0)

12. Advanced Topics in Equilibrium(0)

General Approach to Acid-Base Systems
(0)

Fractional Compositions and Concentrations
(0)

Dependence of Solubility on pH
(0)

13. Fundamentals of Electrochemistry(0)

Basic Concepts
(0)

Electrochemical Cells
(0)

Standard Potentials
(0)

Nernst Equation
(0)

Standard Cell Potential & the Equilibrium Constant
(0)

14. Electrodes and Potentiometry(0)

Potentiometry
(0)

Reference Electrodes
(0)

Junction Potential
(0)

Glass Electrodes and pH Measurements
(0)

15. Redox Titrations(0)

Titrations and Titration Curves
(0)

The End Point
(0)

Analyte Oxidation State
(0)

Oxidizing Agents
(0)

16. Electroanalytical Techniques(0)

Fundamentals of Electrolysis
(0)

Gravimetric Analysis
(0)

Coulometry
(0)

Voltammetry
(0)

17. Fundamentals of Spectrophotometry(0)

Properties of Light
(0)

Absorption of Light
(0)

Measuring Absorbance
(0)

Beer's Law
(0)

Instrument Components
(0)

3. Experimental Error

Precision and Accuracy

3. Experimental Error

Precision and Accuracy: Videos & Practice Problems

Video Lessons Practice Worksheet

Precision and Accuracy Practice Problems

18 problems

Problem 1Multiple Choice

What is the definition of precision in the context of analytical chemistry?

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Problem 2Multiple Choice

What does accuracy refer to in analytical chemistry?

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Problem 3Multiple Choice

Using the dartboard analogy, which scenario represents high precision but low accuracy?

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Problem 4Multiple Choice

Which of the following factors can contribute to experimental error affecting both accuracy and precision?

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Problem 5Multiple Choice

How can standard deviation be used to assess the precision of a set of measurements?

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Problem 6Multiple Choice

An experiment yields results that are consistently close to each other but far from the expected value. How would you evaluate the precision and accuracy of this experiment?

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Problem 7Multiple Choice

Which of the following is a challenge in achieving perfect accuracy and precision in chemical measurements?

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Problem 8Multiple Choice

In an experiment, the measured values are consistently close to each other and also close to the true value. How would you interpret these results?

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Problem 9Multiple Choice

Which of the following is a potential source of experimental error?

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Problem 10Multiple Choice

An experiment consistently yields results that are precise but not accurate. Which of the following improvements could enhance accuracy?

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Problem 11Multiple Choice

You are given a set of measurements with a high standard deviation and a mean close to the true value. How would you synthesize this information to evaluate the experiment?

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Problem 12Multiple Choice

Why is it difficult to achieve perfect accuracy in chemical measurements?

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Problem 13Multiple Choice

An experiment yields results that vary widely but are centered around the true value. How would you evaluate the precision and accuracy of this experiment?

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Problem 14Multiple Choice

Why is precision important in evaluating experimental results?

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Problem 15Multiple Choice

Which scenario on a dartboard represents low precision and low accuracy?

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Problem 16Multiple Choice

Which factor is least likely to contribute to experimental error?

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Problem 17Multiple Choice

An experiment yields results that are consistently far from the true value but close to each other. How would you evaluate the precision and accuracy of this experiment?

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Problem 18Multiple Choice

Which of the following is a challenge in achieving perfect precision in chemical measurements?

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Logarithm and Anti-Logarithm Operations Practice Problems Types of Errors Practice Problems

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