Advertisements
Advertisements
Question
Give a simple chemical test to distinguish between the following pair of compounds:
Benzoic acid and Ethyl benzoate
Advertisements
Solution
Benzoic acid in reaction with sodium bicarbonate liberates CO2 gas with vigorous effervescence, whereas ethyl benzoate does not.
APPEARS IN
RELATED QUESTIONS
Give a simple chemical test to distinguish between the following pair of compounds:
Ethanal and Propanal
A and B are two functional isomers of compound C3H6O.On heating with NaOH and I2, isomer B forms yellow precipitate of iodoform whereas isomer A does not form any precipitate. Write the formulae of A and B.
Predict the products of the following reactions :
Propanal and Propanone
How will you convert ethanal into the following compound?
But-2-enoic acid
Give a simple chemical test to distinguish between the following pair of compounds:
Acetophenone and Benzophenone
Give a simple chemical test to distinguish between the following pair of compounds:
Phenol and Benzoic acid
Which of the following compounds gives a positive Tollen's test but negative Fehling's test?
Solvent used for dewaxing of petroleum products are
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.
Choose the reaction which is not possible:
The reagent that can be used to distinguish acetophenone and benzophenone is ______.
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.
An organic compound 'A' with the molecular formula C4H8O2 undergoes acid hydrolysis to form two compounds 'B' and 'C'. Oxidation of 'C' with acidified potassium permanganate also produces 'B'. Sodium salt of 'B' on heating with soda lime gives methane.
- Identify 'A', 'B' and 'C'.
- Out of 'B' and 'C', which will have higher boiling point? Give reason.
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.
Fehling’s solution ‘A’ is ______.
