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Preparation of propanone from propan-2-ol
- Essay length: 2193 words
- Submitted: 31/12/2011
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Marked by teacher:
Brady Smith
Teacher essay summary
This is a highly detailed, well laid out experiment with excellent alternative methods.
This piece of work is 5*
Marked by teacher Brady Smith 20/02/2012
The first 200 words of this essay...
Date: 11/10/2011
Exp. No.: 23
Title: Preparation of propanone from propan-2-ol
Aim: The aim of this experiment is to prepare propanone by oxidizing propan-2-ol with acidified potassium dichromate solution.
Introduction: Ketones and aldehydes are important series in preparation of other compounds and they are commonly prepared by oxidizing alcohol which is done in this experiment.
The experiment is an oxidation reaction where a secondary alcohol (propan-2-ol) is oxidized by acidified potassium dichromate. The reaction does not need to be heated but should be placed in an iced water bath as the reaction is highly exothermic.
The product is propanone and no catalyst is needed for the reaction.
The propanone is serparated from the reaction mixture by simple distillation and is purified using anhydrous cacium chloride.
The equation of this reaction is as follow:
Chromic acid is produced in situ by adding potassium dichromate (VI) with sulphuric acid and water.
K2Cr2O7 + H2O + 2H2SO4 ? 2 H2CrO4 + 2 NaHSO4
The term chromic acid is usually used for a mixture made by adding concentrated sulfuric acid to a dichromate, which may contain a variety of compounds, including
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MbT essay summary
This is a highly detailed, well laid out experiment with excellent alternative methods.
This piece of work is 5*
