4. BONUS: Lab Techniques and Procedures

Extraction

Separating Components of a Mixture by Extraction

Theory of Extractions | Organic Chemistry Lab

A&#160;separatory funnel&#160;is the commonly used instrument for extraction. In it, two liquid layers are used for the selective precipitation of a solid from the liquid phase based on difference in density and solubility.&#160;

Liquid-Liquid Extraction

The most common form of an extraction is an&#160;acid-base extraction, which uses the different acidities of compounds to selectively precipitate one compound over another.&#160;

Acid-Base Extraction

Solvent extraction or separation

Liquid-liquid extraction (or separation)

A-Level Pre-Lab Video for Using a Separating Funnel

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1. Intro to General Chemistry

2. Atoms & Elements

3. Chemical Reactions

5. BONUS: Mathematical Operations and Functions

6. Chemical Quantities & Aqueous Reactions

7. Gases

8. Thermochemistry

9. Quantum Mechanics

10. Periodic Properties of the Elements

11. Bonding & Molecular Structure

12. Molecular Shapes & Valence Bond Theory

13. Liquids, Solids & Intermolecular Forces

14. Solutions

15. Chemical Kinetics

16. Chemical Equilibrium

17. Acid and Base Equilibrium

18. Aqueous Equilibrium

19. Chemical Thermodynamics

20. Electrochemistry

21. Nuclear Chemistry

22. Organic Chemistry

23. Chemistry of the Nonmetals

24. Transition Metals and Coordination Compounds

[BOOK CHEM] Clutch Version

Chromatography

Chromatography&#160;uses differences in molecular attraction to separate components within a mixture.&#160;

Experimental Error

Experimental error&#160;is the difference between measurements, which deviates from a true value.&#160;

Filtration and Evaporation

FIltration&#160;and&#160;evaporation&#160;allow for the separation of a solid from a liquid mixture.&#160;

Distillation & Floatation

Distillation&#160;and&#160;Floatation&#160;represent&#160;procedures that can be used to separate components of a mixture.&#160;

Extraction&#160;involves the separation of a solid from a solution mixture by selective precipitation.&#160;

Laboratory Materials

The laboratory portion of your chemistry course puts into practice some of the concepts you&#8217;ll gradually be learning. In this section we will familiarize ourselves with some of the basic apparatuses you&#8217;ll be using.&#160;

Test for Ions and Gases

Below are the useful tests that can be employed to identify ions and gases within&#160;typical laboratory procedures.&#160;

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