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JoVE Core

Analytical Chemistry

Video textbook for undergraduate courses: Visualized concepts and experiments

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16 Chapters

250+ Videos

1,700+ Multiple Choice Questions

Table of Contents

Chapter 1

Chemical Applications of Statistical Analyses

22 Videos

24 Minutes

1:13

SI Units: 2019 Redefinition

2K views

1:02

Degrees of Freedom

3.8K views

1:11

Statistical Analysis: Overview

7.1K views

Types of Errors: Detection and Minimization

1:12

Types of Errors: Detection and Minimization

2.1K views

Systematic Error: Methodological and Sampling Errors

1:15

Systematic Error: Methodological and Sampling Errors

2.1K views

1:04

Random Error

1.4K views

Standard Deviation of Calculated Results

1:14

Standard Deviation of Calculated Results

6.6K views

1:05

Introduction to z Scores

548 views

0:59

Uncertainty: Overview

779 views

Propagation of Uncertainty from Random Error

0:59

Propagation of Uncertainty from Random Error

929 views

Propagation of Uncertainty from Systematic Error

1:10

Propagation of Uncertainty from Systematic Error

738 views

0:54

Uncertainty: Confidence Intervals

4.4K views

1:04

Significance Testing: Overview

3.5K views

Identifying Statistically Significant Differences: The <em>F</em>-Test

1:14

Identifying Statistically Significant Differences: The F-Test

1.7K views

Comparing Experimental Results: Student’s <em>t</em>-Test

1:09

Comparing Experimental Results: Student’s t-Test

1.7K views

Detection of Gross Error: The <em>Q</em> Test

1:00

Detection of Gross Error: The Q Test

6.3K views

Calibration Curves: Linear Least Squares

1:20

Calibration Curves: Linear Least Squares

1.6K views

Calibration Curves: Correlation Coefficient

1:10

Calibration Curves: Correlation Coefficient

1.8K views

0:53

Correlation and Regression

1.4K views

Difference from Background: Limit of Detection

1:05

Difference from Background: Limit of Detection

6.8K views

Quantifying and Rejecting Outliers: The Grubbs Test

1:02

Quantifying and Rejecting Outliers: The Grubbs Test

1.8K views

1:13

What is ANOVA?

2K views

Chapter 2

Chemical Equilibria

19 Videos

24 Minutes

1:12

Ionic Strength: Overview

1.6K views

Ionic Strength: Effects on Chemical Equilibria

1:19

Ionic Strength: Effects on Chemical Equilibria

1.6K views

Thermodynamics: Chemical Potential and Activity

1:10

Thermodynamics: Chemical Potential and Activity

1.1K views

1:24

Thermodynamics: Activity Coefficient

1.7K views

Chemical Equilibria: Redefining Equilibrium Constant

1:20

Chemical Equilibria: Redefining Equilibrium Constant

657 views

1:17

Factors Affecting Activity Coefficient

882 views

Chemical Equilibria: Systematic Approach to Equilibrium Calculations

1:21

Chemical Equilibria: Systematic Approach to Equilibrium Calculations

792 views

Acid–Base Equilibria: Activity-Based Definition of pH

1:10

Acid–Base Equilibria: Activity-Based Definition of pH

696 views

1:32

Ladder Diagrams: Acid–Base Equilibria

575 views

1:30

Ladder Diagrams: Redox Equilibria

515 views

Ladder Diagrams: Complexation Equilibria

1:07

Ladder Diagrams: Complexation Equilibria

403 views

1:09

Solubility Equilibria: Overview

782 views

Solubility Equilibria: Ionic Product of Water

1:16

Solubility Equilibria: Ionic Product of Water

1.1K views

1:23

Complexation Equilibria: Overview

779 views

Complexation Equilibria: The Chelate Effect

1:19

Complexation Equilibria: The Chelate Effect

606 views

Complexation Equilibria: Factors Influencing Stability of Complexes

1:09

Complexation Equilibria: Factors Influencing Stability of Complexes

453 views

1:23

Redox Equilibria: Overview

616 views

Titrimetric Methods: Types and Commonly Used Strategies

1:08

Titrimetric Methods: Types and Commonly Used Strategies

1.1K views

Classification of Titrimetric Analysis Based on Reaction Types

1:01

Classification of Titrimetric Analysis Based on Reaction Types

811 views

Chapter 3

Acid–Base Titration

14 Videos

18 Minutes

1:26

Acid–Base Titration: Overview

10.8K views

Titration of a Strong Acid with a Strong Base

1:23

Titration of a Strong Acid with a Strong Base

5.9K views

Titration of a Weak Acid with a Strong Base

1:30

Titration of a Weak Acid with a Strong Base

2.3K views

Titration of a Weak Base with a Strong Acid

1:20

Titration of a Weak Base with a Strong Acid

5.4K views

Titration of a Weak Acid with a Weak Base

1:08

Titration of a Weak Acid with a Weak Base

3.1K views

Solution Composition During Acid/Base Titrations

1:17

Solution Composition During Acid/Base Titrations

665 views

1:19

Mixtures of Acids

745 views

1:16

Titration in Nonaqueous Solvents

922 views

Titration of Polyprotic Base with a Strong Acid

1:18

Titration of Polyprotic Base with a Strong Acid

846 views

Titration of Polyprotic Acids with a Strong Base

1:23

Titration of Polyprotic Acids with a Strong Base

1.9K views

Composition of Polyprotic Acid Solutions as a Function of pH

1:19

Composition of Polyprotic Acid Solutions as a Function of pH

560 views

1:30

Buffers: Overview

4.7K views

1:09

Buffers: Buffer Capacity

1.4K views

1:29

Leveling Effect

873 views

Chapter 4

Introduction to Separation Methods

17 Videos

19 Minutes

0:59

States of Matter and Phase Changes

1.2K views

1:01

Distillation: Vapor–Liquid Equilibria

2.9K views

0:53

Filtration

908 views

1:05

Centrifugation

2.4K views

1:03

Sublimation

824 views

Recrystallization: Solid–Solution Equilibria

1:10

Recrystallization: Solid–Solution Equilibria

1.2K views

Crystal Growth: Principles of Crystallization

1:25

Crystal Growth: Principles of Crystallization

2.3K views

1:17

Precipitation and Co-precipitation

1.9K views

1:06

Coagulation

354 views

1:08

Electrodeposition

692 views

Extraction: Partition and Distribution Coefficients

1:14

Extraction: Partition and Distribution Coefficients

2.6K views

0:53

Extraction: Effects of pH

577 views

0:56

Extraction: Advanced Methods

508 views

1:10

Chromatography: Introduction

4.5K views

1:15

Dialysis

770 views

1:10

Volatilization

440 views

1:17

Ion Exchange

635 views

Chapter 5

Complexometric Titration, Precipitation Titration, and Gravimetry

22 Videos

26 Minutes

0:39

Complexometric Titration: Overview

7.5K views

0:43

Complexometric Titration: Ligands

1.1K views

1:23

Properties of Organometallic Compounds

1.1K views

1:22

EDTA: Chemistry and Properties

2.1K views

1:09

EDTA: Conditional Formation Constant

1K views

1:26

EDTA: Auxiliary Complexing Reagents

648 views

EDTA: Direct, Back-, and Displacement Titration

1:30

EDTA: Direct, Back-, and Displacement Titration

3.1K views

EDTA: Indirect and Alkalimetric Titration

1:23

EDTA: Indirect and Alkalimetric Titration

1.1K views

1:20

Complexometric EDTA Titration Curves

1K views

Effects of EDTA on End-Point Detection Methods

1:18

Effects of EDTA on End-Point Detection Methods

327 views

1:19

Masking and Demasking Agents

2.6K views

1:26

Precipitation Titration: Overview

6.8K views

1:21

Precipitation Titration Curve: Analysis

1.2K views

Precipitation Titration: Endpoint Detection Methods

1:19

Precipitation Titration: Endpoint Detection Methods

2K views

1:05

Gravimetry: Overview

6.3K views

Gravimetry: Inorganic And Organic Precipitating Agents

0:49

Gravimetry: Inorganic And Organic Precipitating Agents

1.4K views

1:03

Precipitation Gravimetry

7K views

Precipitate Formation and Particle Size Control

1:16

Precipitate Formation and Particle Size Control

906 views

1:12

Precipitation Processes

558 views

1:09

Colloidal precipitates

722 views

1:10

Types of Coprecipitation

781 views

Washing, Drying, and Ignition of Precipitates

0:52

Washing, Drying, and Ignition of Precipitates

1K views

Chapter 6

Principles of Mass Spectrometry

14 Videos

18 Minutes

1:19

Mass Spectrometry: Overview

5.6K views

1:13

Mass Spectrometry: Isotope Effect

2.4K views

Mass Spectrometry: Molecular Fragmentation Overview

1:20

Mass Spectrometry: Molecular Fragmentation Overview

3.5K views

1:16

Mass Spectrometers

5.9K views

1:23

Mass Spectrum

2.2K views

1:24

Mass Spectrum: Interpretation

1.5K views

1:13

Mass Analyzers: Overview

775 views

1:19

Mass Analyzers: Common Types

681 views

High-Resolution Mass Spectrometry (HRMS)

1:15

High-Resolution Mass Spectrometry (HRMS)

1.5K views

1:21

Mass Spectrometry: Complex Analysis

869 views

1:21

Tandem Mass Spectrometry

1.2K views

Gas Chromatography–Mass Spectrometry (GC–MS)

1:14

Gas Chromatography–Mass Spectrometry (GC–MS)

4.5K views

Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview

1:19

Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview

876 views

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences

1:20

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences

573 views

Chapter 7

Principles of Nuclear Magnetic Resonance

13 Videos

15 Minutes

Nuclear Magnetic Resonance (NMR): Overview

1:07

Nuclear Magnetic Resonance (NMR): Overview

2.9K views

1:08

Atomic Nuclei: Nuclear Spin

2.3K views

0:59

Atomic Nuclei: Nuclear Magnetic Moment

1.4K views

Atomic Nuclei: Nuclear Spin State Overview

1:03

Atomic Nuclei: Nuclear Spin State Overview

1.1K views

Atomic Nuclei: Nuclear Spin State Population Distribution

1:14

Atomic Nuclei: Nuclear Spin State Population Distribution

1.1K views

Atomic Nuclei: Larmor Precession Frequency

1:11

Atomic Nuclei: Larmor Precession Frequency

1.6K views

1:05

Atomic Nuclei: Magnetic Resonance

739 views

Atomic Nuclei: Nuclear Relaxation Processes

1:23

Atomic Nuclei: Nuclear Relaxation Processes

703 views

Atomic Nuclei: Types of Nuclear Relaxation

1:28

Atomic Nuclei: Types of Nuclear Relaxation

358 views

1:20

NMR Spectrometers: Overview

1.3K views

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

1:17

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

887 views

NMR Spectrometers: Resolution and Error Correction

1:14

NMR Spectrometers: Resolution and Error Correction

756 views

Diamagnetic Shielding of Nuclei: Local Diamagnetic Current

1:14

Diamagnetic Shielding of Nuclei: Local Diamagnetic Current

945 views

Chapter 8

Interpreting Nuclear Magnetic Resonance Spectra

24 Videos

29 Minutes

Chemical Shift: Internal References and Solvent Effects

1:17

Chemical Shift: Internal References and Solvent Effects

730 views

NMR Spectroscopy: Chemical Shift Overview

1:15

NMR Spectroscopy: Chemical Shift Overview

1.6K views

1:07

Proton (¹H) NMR: Chemical Shift

1.9K views

Inductive Effects on Chemical Shift: Overview

1:27

Inductive Effects on Chemical Shift: Overview

1.3K views

π Electron Effects on Chemical Shift: Overview

1:27

π Electron Effects on Chemical Shift: Overview

1.1K views

π Electron Effects on Chemical Shift: Aromatic and Antiaromatic Compounds

1:14

π Electron Effects on Chemical Shift: Aromatic and Antiaromatic Compounds

1.3K views

¹H NMR Chemical Shift Equivalence: Homotopic and Heterotopic Protons

1:03

¹H NMR Chemical Shift Equivalence: Homotopic and Heterotopic Protons

2.5K views

¹H NMR Chemical Shift Equivalence: Enantiotopic and Diastereotopic Protons

0:58

¹H NMR Chemical Shift Equivalence: Enantiotopic and Diastereotopic Protons

1.9K views

0:58

¹H NMR Signal Integration: Overview

1.7K views

1:08

NMR Spectroscopy: Spin–Spin Coupling

1.5K views

¹H NMR Signal Multiplicity: Splitting Patterns

1:13

¹H NMR Signal Multiplicity: Splitting Patterns

5.3K views

Interpreting ¹H NMR Signal Splitting: The (<em>n</em> + 1) Rule

1:10

Interpreting ¹H NMR Signal Splitting: The (n + 1) Rule

1.4K views

1:08

Spin–Spin Coupling Constant: Overview

990 views

1:17

Spin–Spin Coupling: One-Bond Coupling

1K views

Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)

1:20

Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)

1.1K views

Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)

1:22

Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)

1.1K views

1:27

¹H NMR: Long-Range Coupling

1.9K views

1:13

¹H NMR: Complex Splitting

1.3K views

1:09

¹H NMR: Pople Notation

1.9K views

¹H NMR: Interpreting Distorted and Overlapping Signals

1:02

¹H NMR: Interpreting Distorted and Overlapping Signals

1.1K views

1:10

Carbon-13 (¹³C) NMR: Overview

6K views

1:04

¹³C NMR: ¹H–¹³C Decoupling

1.2K views

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

1:20

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

1.1K views

Other Nuclides: <sup>31</sup>P, <sup>19</sup>F, <sup>15</sup>N NMR

1:16

Other Nuclides: ³¹P, ¹⁹F, ¹⁵N NMR

441 views

Chapter 9

Method Development and Sampling Techniques

17 Videos

20 Minutes

1:21

Development of Analytical Methods

655 views

1:05

Quality Control

243 views

1:19

Quality Assurance

179 views

1:15

Data Validation

213 views

1:10

Qualitative Analysis

618 views

1:12

Quantitative Analysis

548 views

1:12

Instrument Calibration

248 views

1:11

Glassware Calibration

379 views

1:14

Standard Solutions

419 views

0:56

Blank Solutions

450 views

1:06

Sampling Methods: Overview

467 views

1:18

Sampling Methods: Sample Types

351 views

1:23

Sampling Plans

240 views

Sample Preparation for Analysis: Overview

1:21

Sample Preparation for Analysis: Overview

300 views

Sample Preparation for Analysis: Advanced Techniques

1:08

Sample Preparation for Analysis: Advanced Techniques

426 views

1:02

Sample Handling

134 views

1:16

Contaminants and Errors

125 views

Chapter 10

Electrochemical Analyses and Redox Titration

24 Videos

30 Minutes

1:04

Electrochemistry: Overview

2.1K views

1:17

Electrodes: Overview

1.8K views

Interfacial Electrochemical Methods: Overview

1:06

Interfacial Electrochemical Methods: Overview

351 views

1:06

Potentiometry: Overview

2.5K views

1:19

Potentiometry: Types of Electrodes

850 views

1:15

Potentiometry: Membrane Electrodes

722 views

1:21

Redox Titration: Overview

3.3K views

Redox Titration: Iodimetry and Iodometry

1:23

Redox Titration: Iodimetry and Iodometry

2.4K views

Redox Titration: Other Oxidizing and Reducing Agents

1:26

Redox Titration: Other Oxidizing and Reducing Agents

368 views

1:31

Potentiometric Titration: Overview

1.9K views

1:07

End Point Prediction: Gran Plot

501 views

1:30

Electrogravimetric Analysis: Overview

305 views

1:00

Coulometry: Overview

1.6K views

Controlled-Potential Coulometry: Electrolytic Methods

1:17

Controlled-Potential Coulometry: Electrolytic Methods

245 views

1:27

Controlled-Current Coulometry: Overview

285 views

Controlled-Current Coulometry: Coulometric Titration

1:18

Controlled-Current Coulometry: Coulometric Titration

224 views

1:20

Voltammetry: Overview

1.9K views

Voltammetry: Factors Affecting Measurements

1:21

Voltammetry: Factors Affecting Measurements

199 views

1:16

Voltammograms: Overview

271 views

Voltammetric Techniques: Linear-Scan (E vs Time)

1:12

Voltammetric Techniques: Linear-Scan (E vs Time)

472 views

Voltammetric Techniques: Pulse Voltammetry

1:17

Voltammetric Techniques: Pulse Voltammetry

654 views

Voltammetric Techniques: Cyclic Voltammetry

1:10

Voltammetric Techniques: Cyclic Voltammetry

648 views

1:13

Voltammetry: Stripping Methods

316 views

1:10

Amperometry: Overview

687 views

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Real-world demonstrations of scientific live experiments in top university labs. Bringing theory to life and showcasing research use of scientific concepts.

‘I beg you to call the boy back, and not send that note,’ she said. ‘I hate to think of your doing that. It isn’t the act of——’ "Never mind, we must have a long talk. At present there is a verbal message for me; what is it?" "Do you think she'd come? She'd have gone to Ship Island if I had caught her." "Why should I deny it?" Leona said boldly. "My husband was murdered. He was slain by Dr. Gordon Bruce for the sake of his money." The reformed system of education was to be not only moral and religious but also severely scientific. The place given to mathematics as the foundation of a right intellectual training is most remarkable, and shows how truly Plato apprehended the conditions under which knowledge is acquired and enlarged. Here, as in other respects, he is, more even than Aristotle, the precursor of Auguste Comte. He arranges the mathematical sciences, so far as they then existed, in their logical order; and his remarks on the most general ideas suggested by astronomy read like a divination of rational mechanics. That a recommendation of such studies should be put into the mouth of Socrates is a striking incongruity. The older Plato grew the farther he seems to have advanced from the humanist to the naturalistic point of view; and, had he been willing to confess it, Hippias and Prodicus were the teachers with whom he finally found himself most in sympathy. And turned their savage life to civil ways; The one at the end accomplishing a graceful pirouette is me--I mean He made his calculation. Countless times his nerves had been pulled by sounds which turned out on second thought to be only the contracting of the hot metal, subjected to the sun all day, as the evening breeze robbed it of its warmth. As he had made Mrs. Campbell his confidante from the first, he told her about this too, now, and finished with the half-helpless, half-amused query as to what he should do. "It may be any length of time before she decides that she is old enough, and it never seems to occur to her that this state of things can't go on forever, that she is imposing upon you." "And the most serious part of it," he added after a while, "is that she does not love me." "Will the guerrillas begin shootin' at us as soon's we cross the river?" "But we didn't lose 'em in action, and to say so'd be a lie," answered Si, whose conscience had none of the easy elasticity of his partner's. "We could report 'em burnt up by lightnin','but we won't. They was lost by sheer, dumbed carelessness, that me and you and the boys should knowed better than to've allowed. That's all there is of it, and that's what I'm goin' to report, if I have to." The battery was one of the oldest and best in the army, and its "fire discipline" was superb. She felt her heart grow sick. If she had been happy for four hours, why, in God's name, had they not passed like four hours instead of like four minutes? "Unto the ends of the earth—Hastings. There's a friend of Ades there wot'll guide me into the Spirit's ways." HoME 大香蕉综合伊人91新人 ENTER NUMBET 0015zpqrgi.com.cn
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