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Yogita Ingle 7 years, 4 months ago
Phenols are weakly acidic in nature. They turn blue litmus red and react with alkali metals and alkalies to form their salts. Phenol is a weaker acid than carboxylic acid, hence does not react with sodium carbonate and sodium bicarbonate.
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Yogita Ingle 7 years, 4 months ago
The mechanism of aldol condensation initiates with the formation of carbanion intermediate. Refer to the steps below to observe the mechanism of aldol condensation in the presence of a base as a catalyst.
Aldol Condensation in Aldehydes with Base as a Catalyst
- Step 1: Removal of α-hydrogen from the base
- Step 2: The first step results in the formation of carbanion which undergoes a nucleophilic addition reaction with the carbonyl group present in the second molecule of the aldehyde (in this case ethanal). The second step results in the formation of the condensation product.
- Step 3: Protonation of alkoxide ion will occur due to reaction with water.
- Step 4: Heating of the aldol compound in the basic solution will help in dehydrating the product to form α β‐unsaturated aldehyde compound.
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Yogita Ingle 7 years, 4 months ago
Perchloric acid is stronger acid than sulphuric acid because Cl is more electronegative than S. Perchloric acid has more number of double bond than H2SO4. So Perchloric acid is more acidic than H₂SO₄.
and the conjugate of it is more stable.
Posted by Harsimran K 4 years, 9 months ago
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Sia ? 4 years, 9 months ago
Hydrolysis of C2H5Br with refluxing aqueous KOH followed by acidification with dil HNO3 and subsequent treatment with AgNO3 gives light yellow ppt. of AgBr whereas C6H5Br does not gives this test.
Posted by Mohit Kumar 7 years, 4 months ago
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Harsimran K 7 years, 4 months ago
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