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प्रश्न
How would you distinguish experimentally between an alcohol and a carboxylic acid?
उत्तर
- Dip a strip of blue litmus into both alcohol and carboxylic acid placed in separate glass tubes. The litmus will turn red in the tube with carboxylic acid, while there will be no color change in the tube with alcohol.
- Add a small amount of solid sodium bicarbonate (NaHCO₃) to both tubes. You will observe rapid effervescence and bubbling due to the release of CO₂ in the tube with carboxylic acid, whereas no reaction will occur in the tube with alcohol.
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संबंधित प्रश्न
Give two properties of ethanol.
Write the molecular formula of ethanol.
Draw the structures for the following compounds:
Propanal
Three organic compounds A, B and C have the following molecular formulae: C4H8O2
Which compound contains an alcohol group? Write its name and structural formula.
Write the chemical equation of the reaction which takes place during the burning of ethanol in air.
How would you test for an alcohol?
Explain why, methanol is much more dangerous to drink than ethanol.
What happens when ethanol is heated with concentrated sulphuric acid at 170°C? Write the equation of the reaction which takes place.
What happens when ethanol is oxidised with alkaline potassium permanganate (or acidified potassium dichromate)? Write the equation of the reaction involved.
Which of the following can damage optic nerve leading to blindness, if taken internally?
(a) CH3COOH
(b) C2H5OH
(c) NaHCO3
(d) CH3OH
Consider the following organic compound:
CH3OH, C2H5OH, CH3COCH3, CH3COOH, C2H5COOH, C4H9COOC2H5, CH4, C2H6, CH3CHO, HCHO
Out of these compound:
Which compound is used to sterilise wounds and syringes?
State the method of preparation of ethanol by hydrolysis of ethyl bromide.
Ethanol can be converted to ethene which can be changed to ethane.
Choose the correct word or phrase from the options given below to complete the following sentences:
The conversion of ethanol to ehane is an example of_________(dehydration, dehydrogenation)
Sodium is stored under kerosene. Give reason.
An organic compound ‘A’ is widely used as a preservative and has the molecular formula C2H4O2. This compound reacts with ethanol to form a sweet-smelling compound ‘B’.
Write the chemical equation for its reaction with ethanol to form compound ‘B’.
Draw electron dot structure of Ethanol.
Give the balanced chemical equation of the following reaction:
Combustion of ethanol.
Give the balanced chemical equation of the following reaction:
Oxidation of ethanol by acidified potassium dichromate.
Give the balanced chemical equation of the following reaction:
Oxidation of ethanol by acidified potassium dichromate.
