Advertisements
Advertisements
Question
The reagent that can be used to distinguish acetophenone and benzophenone is ______.
Options
2, 4-dinitrophenyl hydrazine
aqueous NaHSO3
Fehling solution
I2 and NaOH
Advertisements
Solution
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.
APPEARS IN
RELATED QUESTIONS
Give a simple chemical test to distinguish between the following pair of compounds:
Ethanal and Propanal
Distinguish between: CH3COOH and HCOOH
How will you convert ethanal into the following compound?
But-2-enoic acid
Alkenes decolourise bromine water in presence of CCl4 due to formation of ______.
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.
What is the composition of Fehling's reagent?
The correct set of products obtained in the following reactions:
- \[\ce{RCN ->[reduction]}\]
- \[\ce{RCN ->[(i) CH3MgBr][(ii) H2O]}\]
- \[\ce{RNC ->[hydrolysis]}\]
- \[\ce{RNH2 ->[HNO2]}\]
Choose the reaction which is not possible:
In Tollen's test for aldehyde, the overall number of electrons(s) transferred to the Tollen's reagent formula \[\ce{[Ag(NH3)2]+}\] per aldehyde group to form silver mirror is ______. (Round off to the nearest integer)
An organic compound 'A' with molecular formula C5H8O2 is reduced to n-pentane with hydrazine followed by heating with NaOH and glycol. 'A' forms a dioxime with hydroxylamine and gives a positive iodoform and Tollen's test. Identify 'A' and give its reaction for iodoform and Tollen's test.
