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Reaction of Sodium Formate with Acetyl Chloride

Out of the fo...

Question

Out of the following compounds, the number of compounds which give a positive haloform test is
(a) Ethanol
(b) Methanol
(c) Acetaldehyde
(d) Acetone
(e) Formaldehyde
(f) Propanaldehyde
(g) 3-pentanone
(h) 2-pentanone

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Solution

All organic compounds which either have a $C H_{3} C O - g r o u p o r a C H_{3} C H (O H) - g r o u p$ answers the haloform test
(a) Ethanol (positive)
(b) Methanol (negative)
(c) Acetaldehyde (positive)
(d) Acetone (positive)
(e) Formaldehyde (negative)
(f) Propanaldehyde (negative)
(g) 3-pentanone (negative)
(h) 2-pentanone (positive)

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