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Professions and Applied Sciences
Esters 7. Finding the Saponification Value of a Fat.
This video considers saponification values. It looks at what they measure (relative chain lengths of a fat's fatty acids) and how they are determined in the laboratory.
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A Colorful Magic Trick with Acids and Bases Low
This Chemistry lesson is titled A Colorful Magic Trick with Acids and Bases Low and will give a detailed explanation of the topic.
CH 8 CHEMISTRY LEWIS DOT STRUCTURES
How to build Lewis Dot Structures for Covalent molecules or Molecular Compounds.
Complex Ions Reversible ligand substitution with copper chloride
Hydrated copper (II) chloride is dissolved in water and concentrated hydrochloric acid is added to change the colour of the solution from blue to green-yellow. The ligand substitution is then reversed by adding an excess of deionised water. The structures of the complexes and the thermodynamic and equilibrium factors are discussed briefly.
Esters 6. Alkaline hydrolysis of esters (inc. saponification)
This short video looks at the alkaline catalysed hydrolysis of both simple and complex esters - the later making a soap in what is also known as a saponification reaction. The hydrolysis of ethyl ethanoate is shown first, followed by the hydrolysis (saponification) of tristearine. The next video in the series looks at how we determine the saponification value of a fat or oil.
Is an electrically neutral group of two or more atoms held together by covalent chemical bonds
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