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The yellow colour sticker are the observations accepted. So you can proceed with writing lab report. Thanks.✌🏼

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AMZAR SYAZWAN AMEER BAIHAKI

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AMZAR SYAZWAN AMEER BAIHAKI

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NISSA S23P9

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Logananthini S23P9

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Observation(amira, liyana, nadhirah,fatihah)

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Iodoform Test

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Schiff Test

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Tollens' Test

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Fehling's Test

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Brady's test

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Tollen's test

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Fehling's test

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Schiff's test

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Iodoform test
A-ethanal
B-benzaldehyde
C-propanone
D-unknown y

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Fehling's Test

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Tollens' test

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Iodoform test

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Brady's Test

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Fehling’s Test
ethanal: 🔵colour —> brick red
benzaldehyde,propanone and unknown Y: 🔵 colour remained unchanged

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Fehling's test

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Schiff's test

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Bradys test

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fehling’s test

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Brady’s Test

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Schiff's test result

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Brady's test result
A-ethanal
B-benzaldehyde
C-propanone
D-unknown y

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The purpose of iodoform test: to identify the presence of methyl carbinol.

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Experiment D:
Ethanal: Reddish purple color solution formed
Propanone: Reddish purple color solution formed
Benzaldehyde: White precipitate is formed
Unknown Y: Pinkish purple color solution is formed

Experiment E:
Ethanal: Yellow precipitate is formed
Propanone: Yellow precipitate is formed
Benzaldehyde: No yellow precipitate is formed
Unknown Y: Yellow precipitate is formed

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Observation  (Chua Xin Lin)

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Experiment A
Ethanal: A yellow orange precipitate is formed
Propanone : A yellow orange precipitate is formed
Benzaldehyde: A yellow orange precipitate is formed
Unknown Y : A yellow orange precipitate is formed

Experiment B:
Ethanal: Blue color changes to brick red
Propanone: Blue color remains unchanged
Benzaldehyde: Blue color remains unchanged
Unknown Y: Blue color remains unchanged

Experiment C:
Ethanal: Silver mirror is formed
Propanone: No formation of silver mirror
Benzaldehyde: Silver mirror is formed
Unknown Y: No formation of silver mirror

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Fehling’s test used to distinguish between aromatic aldehydes, aliphatic aldehydes & ketones.

Aliphatic aldehydes gives brick red precipitate while other compounds remains unchanged.

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Brady’s test used to determine the presence of carbonyl group in an organic compound

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Another Tollen’s test result

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Tollen’s test result

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Fehling’s test result

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Schiff test result

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TANG SIM YING
Fehling' s test
ethanal- brick red precipitate is formed
benzaldehyde- blue colour remain unchanged
propanone- blue colour remain unchanged
unknown Y - blue colour remain unchanged

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Brady’s test result

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Another iodoform test result

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Schiff's test
ethanal-purple solution formed
benzaldehyde-pink solution formed
propanone-magenta solution formed
unknown y-colourless
Iodoform test
ethanal-yellow precipitate formed
benzaldehyde-no yellow precipitate
propanone-yellow precipitate formed
unknown y-yellow precipitate formed

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Iodoform test run result

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experiment D
ethanal : purple solution formed
benzaldehyde : pink solution formed
propanone : magenta solution formed
unknown y : remains unchanged

experiment E
ethanal : yellow precipitate formed
benzaldehyde : solution remains unchanged
propanone : yellow precipitate formed
unknown y : yellow precipitate formed