Critically evaluate the method and the way you carried it out. Include your results and draw...

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Critically evaluate the method and the way you carried it out. Include your results and draw conclusions. Suggest improvement you would make if you were to carry out the experiment in the future.Experiment 9 Haloform reaction with butanone (MEK) and non methyl ketonesIodine solution is added to a small amount of aldehyde or ketone, followed by just enough sodium hydroxide solution to remove the colour of the iodine. If nothing happens in the cold, it may be necessary to warm the mixture very gently.A positive result is the appearance of a very pale yellow precipitate of triiodomethane (previously known as iodoform) - CHI3.Apart from its colour, this can be recognised by its faintly "medical" smell. It is used as an antiseptic on the sort of sticky plasters you put on minor cuts, for example.Iodine solution is added to a small amount of aldehyde or ketone, followed by just enough sodium hydroxide solution to remove the colour of the iodine. If nothing happens in the cold, it may be necessary to warm the mixture very gently.A positive result is the appearance of a very pale yellow precipitate of triiodomethane (previously known as iodoform) - CHI3.Apart from its colour, this can be recognised by its faintly "medical" smell. It is used as an antiseptic on the sort of sticky plasters you put on minor cuts, for example.
	
Document Preview: Critically evaluate the method and the way you carried it out.   Include your results and draw conclusions.  Suggest improvement you would make if you were to carry out the experiment in the future.Experiment 9  Haloform reaction with butanone (MEK) and non methyl ketonesIodine solution is added to a small amount of aldehyde or ketone, followed by just enough sodium hydroxide solution to remove the colour of the iodine. If nothing happens in the cold, it may be necessary to warm the mixture very gently.A positive result is the appearance of a very pale yellow precipitate of triiodomethane (previously known as iodoform) - CHI3.Apart from its colour, this can be recognised by its faintly "medical" smell. It is used as an antiseptic on the sort of sticky plasters you put on minor cuts, for example.

David · Accepted Answer

Solution:TTs100213_30633_19 
When an aldehyde or ketone containing CH3CO- moiety or an alcohol having structural unit 
CH3-CH-OH (which is transformed to CH3CO- under experimental condition) is treated with 
excess halogen in alkaline solution, a Haloform (trihalomethane) and a carboxylate ion are 
produced. 
Overall reaction: 
R
C
CH3
O
4  OH 3  X2
O
CHX3 3 H2O 3 X
( HALOFORM)R
C
O
R
C
CH3
O
4  OH 3  X2
O
CHX3 3 H2O 3 X
( HALOFORM)R
C
O
 
When Iodine is used (as the halogen), the reaction is called the “Iodoform reaction” or 
“Iodoform test reaction”. The iodoform is a pale yellow solid and has a characteristic odor.

Critically evaluate the method and the way you carried it out. Include your results and draw conclusions. Suggest improvement you would make if you were to carry out the experiment in the future....

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