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प्रश्न
The reagent that can be used to distinguish acetophenone and benzophenone is ______.
विकल्प
2, 4-dinitrophenyl hydrazine
aqueous NaHSO3
Fehling solution
I2 and NaOH
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उत्तर
The reagent that can be used to distinguish acetophenone and benzophenone is I2 and NaOH.
Explanation:
In the preceding test, the I2 and NaOH tests are utilized to differentiate between acetophenone and benzophenone. When iodine molecules react with acetophenone, they generate methyl iodide by combining with methyl groups. The synthesis of methyl iodide produces a yellow precipitate, indicating that the molecule is acetophenone.
However, no precipitate is generated when I2 and NaOH combine with benzophenone. Because benzophenone has a ring that resists precipitation, this reaction does not occur.
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संबंधित प्रश्न
Give a simple chemical test to distinguish between the following pair of compounds:
Ethanal and Propanal
Give a simple chemical test to distinguish between the following pair of compounds:
Benzaldehyde and Acetophenone
Complete the synthesis by giving missing starting material, reagent or product.
Acetone and acetaldehyde are differentiated by
A hydrocarbon (A) with molecular formula C5H10 on ozonolysis gives two products (B) and (C). Both (B) and (C) give a yellow precipitate when heated with iodine in presence of NaOH while only (B) give a silver mirror on reaction with Tollen’s reagent.
- Identify (A), (B) and (C).
- Write the reaction of B with Tollen’s reagent.
- Write the equation for iodoform test for C.
- Write down the equation for aldol condensation reaction of B and C.
Write chemical test to distinguish between the following compounds:
Phenol and Benzoic acid
What is the composition of Fehling's reagent?
Choose the reaction which is not possible:
You are given four organic compounds “A”, “B” , “C” and “D”. The compounds “A”, “B” and “C” form an orange-red precipitate with 2, 4 DNP reagent. Compounds “A” and “B” reduce Tollen’s reagent while compounds “C” and “D” do not. Both “B” and “C” give a yellow precipitate when heated with iodine in the presence of NaOH. Compound “D” gives brisk effervescence with sodium bicarbonate solution. Identify “A”, “B”, “C” and “D” given the number of carbon atoms in three of these carbon compounds is three while one has two carbon atoms. Give an explanation for our answer.
