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Hi,
Iodoform test is used for the detection of methyl ketones as methyl ketones give positive iodoform test. In this test, methyl ketone is treated with iodine (I2) in the presence of base such as sodium hydroxide (NaOH) to give iodoform(CHI3 - a light yellow coloured ppt).
Chemistry of iodoform test is:
Secondary alcohols also give positive iodoform test because during the reaction conditions, it gets oxidized to a methyl ketone.
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoWhen the reagent is added to the solution containing the unknown alcohol, no yellow precipitate of iodoform will form (negative test). Moreover, when the iodoform test is negative, the brown color of iodine will not discharge when the reagent is added.
Wiki User
∙ 13y agoA positive test will result in the brown color of the reagent disappearing and the yellow iodoform solid precipitating out of solution.
Wiki User
∙ 11y agoblue/black, but you will mainly see black
Wiki User
∙ 14y agofor the presence of starch:)
Wiki User
∙ 13y agoblue
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Will methanol give a positive result in iodoform test?
Iodoform test is valid only for ethanol.
In iodoform test can you use ethanol instead of water?
no, because ethanol gives iodoform reactions
What is the primary alcohol which gives iodoform test?
Ethanol is the only primary alcohol to give the iodoform test due to the presene of methyl group attached to alpha carbon atom.
What test is used to show the reducing property of an aldehyde and a ketone?
tollen's test, fehling's test, iodoform test
Why only methyl ketones give iodoform test?
it is a ketone CH3CO group in carbonyl compound
Will methanol give a positive result in iodoform test?
Iodoform test is valid only for ethanol.
What is the structure of C8H8O compound which gives a positive test of iodoform test and reacts with sodium almagam to yield C8H10O which gave negative iodoform test?
Structure of phenyl acetic acid (C8H8O2) is attached below.
In iodoform test can you use ethanol instead of water?
no, because ethanol gives iodoform reactions
What is a test for presence of coch3 group?
Use an Iodoform test
An unknown carbonyl compound tested positive when mixed with chromic acid solution it also showed positive results in the iodoform test draw the struture of this compound?
acetic acid
What is the primary alcohol which gives iodoform test?
Ethanol is the only primary alcohol to give the iodoform test due to the presene of methyl group attached to alpha carbon atom.
What test is used to show the reducing property of an aldehyde and a ketone?
tollen's test, fehling's test, iodoform test
Why only methyl ketones give iodoform test?
it is a ketone CH3CO group in carbonyl compound
What are the uses of iodoform?
Iodoform is used as a disinfectant, ear-hair remover, and it is used in packaging.
All about iodoform?
Iodoform has the chemical formula CHI3; it is a crystalline solid, volatile, yellow, with a characteristic odor. Iodoform was used as antiseptic.
What happen when iodoform falls on skin or nails?
Iodoform is a disinfectant, pale yelow color.
What is hci3?
iodoform
