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Chem 9 and 10
| question | Answer |
|---|---|
| tests for carbon to carbon double bonds | -bromine water test -acidified permanganate test |
| tests for presence of hydroxyl group functional group | -acidified potassium dichromate test -followed by silver mirror test -lucas test -esterification |
| tests for presence of carboxyl functional group | -acid base indicator -reaction with metal carbonates -esterification |
| melting points of pure and impure substances | pure substances have melting points that have a very small temperature range impure substances have a lower and broader range of melting temperature. overall lattice is disrupted |
| fractional distillation | technique used to seperate substances with similar boiling points. substances with lower boiling point is collected first. impurities increase boiling point due to additional intermolecular forces |
| KOHES (acidic) | Key element, Oxygen by adding water, hydrogens by adding protons, electrons, sates |
| KOHNES (basic) | Key element, Oxygen by adding water, hydrogens by adding protons, neutralise by adding hydroxide ions to both sides, electrons, sates |
| iodine value | mass of iodine in grams reacted over 100g of fatty acid fat or oil or biodiesel |
| base peak | most abundant peak corresponding to most stable fragment or m/z |
| parent/molecular peak | measures molar mass |
Created by:
kelllyy