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प्रश्न
Write any two physical properties of Ethanol.
उत्तर
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संबंधित प्रश्न
A carbon compound 'P' on heating with excess conc. H2SO4 forms another carbon compound 'Q' which on addition of hydrogen in the presence of nickel catalyst forms a saturated carbon compound 'R'. One molecule of 'R' on combustion forms two molecules of carbon dioxide and three molecules of water. Identify P, Q and R and write chemical equations for the reactions involved
Write the molecular formula of the 2nd and the 3rd member of the homologous series whose first member is methane.
Write the molecular formula of ethanol.
Give one exampleof the compound having the following functional group:
Alcohol group
What is the molecular formula and structure of the alcohol which can be thought to be derived from pentane?
What is meant by a functional group? Explain with an example.
Draw the structures for the following compounds:
Ethanal
Draw the structures for the following compounds of Pentanal
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.
Describe one reaction of ethanol.
With a labelled diagram describe an activity to show the formation of an ester.
How will you carry out the following conversions:
(i) Ethanol to ethene
(ii) Bromoethane to ethanol
3 mL of ethanol is taken in a test tube and warmed gently in a water bath. A 5% solution of alkaline potassium permanganate is added to the first drop by drop to this solution, then in excess.
(i) How is a 5% solution of KMnO4 prepared?
(ii) State the role of alkaline potassium permanganate in this reaction. What happens on adding it in excess?
(iii) Write the chemical equation of this reaction.
100% pure ethanol is called ______.
Draw the electron dot structure of ethyne and also draw its structural formula
Look at below figure and answer the following questions.
- What change would you observe in the calcium hydroxide solution taken in tube B?
- Write the reaction involved in test tubes A and B respectively.
- If ethanol is given instead of ethanoic acid, would you expect the same change?
- How can a solution of lime water be prepared in the laboratory?
Give the balanced chemical equation of the reactions.
Neutralization of NaOH with ethanoic acid.
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.
