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Chemistry
A Level

What is Le Chatelier's principle?

If a reaction at equilibrium is subjected to a change in concentration, pressure or temperature, the position of equilibrium will move to counteract that change.

Answered by Bridget S. Chemistry tutor
2031 Views

Give the two reactions required in order to convert an alcohol into a hydroxynitrile. Include reactants and conditions. (6 marks)

Convert an alcohol into a ketone by heating it in reflux apparatus with potassium dichromate/K2

Answered by Annabelle B. Chemistry tutor
958 Views

Explain how a hydroxynitrile is produced from a ketone

Hydroxynitriles are produced from ketones by a nucleophilic addition reaction. The negatively charged cyanide ion from KCN is attracted to the partially positive carbon on the carbonyl group. This causes ...

Answered by Chemistry tutor
2067 Views

Name the reagent and explain the process of 1-bromoethane into propanoic acid

Produce the Grignard reagentMg in a dry ether (ethoxyethane) with CH3CH2BrCH3CH2Br + Mg ---> CH3CH2MgBrAddition reaction with the Grignard and CO2 to produce a Carboxylic acid Must be hydrolysed using ...

Answered by Oscar W. Chemistry tutor
1952 Views

Explain why the first ionisation energy of phosphorous is different to that of sulfur

Sulfur has an atomic number of 16, phosphorous is 15. The first ionisation energy of a periodic row usually increases left to right. This is because number of protons increases thus increasing nuclear cha...

Answered by Hollie S. Chemistry tutor
2470 Views

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