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Chemistry Stuff

Chemistry A level

QuestionAnswer
What is the mobile phase in TLC? The solvent
What is the mobile phase in Gas Chromatography? A carrier gas! Aka an inert gas
How does the solid stationary seperate? Seperates by adsorption
How does the liquid stationary phase seperate? Seperates by relative solubility
What is Retention Time? The time taken for a component to pass through the column
What is Retention Factor? Distance moved by component/Distance moved by solvent front
An amino acid is in acidic conditions, what happens? It accepts a proton/Acts as a base
An amino acid is in alkaline conditions, what happens? It donates a proton/Acts as an acid
An aldehyde is reacted with Acidified Potassium Dichromate, what is formed? A Carboxylic Acid
An aldehyde is reacted with NaBH4, what is formed? A Primary Alcohol
A ketone is reacted with Acidified Potassium Dichromate, what is formed? There is no reaction, the Ketone doesn't change
A ketone is reacted with NaBH4, what is formed? A Secondary Alcohol
When a carbonyl reacts with 2,4-DNP, what is formed? They form a yellow/orange precipitate
Phenylamine reacts to convert into Benzenediazonium chloride, what are the reagents and conditions? NaNO2 and HCl (Form Nitrous acid; HONO) below 10 degrees celcius
Benzenediazonium chloride is converted to an Azodye, what are the reagents and conditions? Phenol and NaOH (Alkaline Conditions)
How many types of stereoisomerism are there and what are they called? 2, Optical isomerism and Geometrical isomerism
What is condensation polymerisation? The joining of 2 monomers with the elimination of a small molecule (e.g. water or HCl) to form a chain/polymer
What is addition polymerisation? The joining of 2 unsaturated monomers (generally the same) to form a saturated chain/polymer
Created by: Peter B
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