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प्रश्न
What happens when propanoic acid is warmed with methanol in the presence of a few drops of concentrated sulphuric acid? Write equation of the reaction involved.
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उत्तर
When propanoic acid is warmed with methanol in the presence of a few drops of concentrated sulphuric acid in it, esterification takes place and an ester named methyl propanoate is formed along with water.
The chemical equation for the above reaction is:
C2H5COOH + CH3OH → C2H5COOCH3 + H2O.
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संबंधित प्रश्न
Complete the following chemical equations: CH3COOH+NaHCO3→
Write the formulae of ethanoic acid.
What happens when ethanoic acid reacts with sodium carbonate? Write chemical equation of the reaction involved.
What is an oxidising agent?
Name two oxidising agents which can oxidise ethanol to ethanoic acid.
Give any two uses of ethanoic acid.
Vinegar is a solution of about:
(a) 5 to 8 per cent ethanoic acid in alcohol
(b) 5 to 8 per cent ethanoic acid in water
(c) 50 to 80 per cent ethanoic acid in water
(d) 50 to 80 per cent ethanoic acid in alcohol
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HCHO, C2H5OH, C2H6, CH3COOH, C2H5CI
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CH3OH, C2H5OH, CH3COCH3, CH3COOH, C2H5COOH, C4H9COOC2H5, CH4, C2H6, CH3CHO, HCHO
Out of these compound:
Which compound is a constituent of vinegar?(e) Which compound is a constituent of vinegar?
An organic acid X is a liquid, which often freezes during winter time in cold countries, having the molecular formula C2H4O2. On warming it with methanol in the presence of a few drops of concentrated sulphuric acid, a compound Y with a sweet smell is formed.
(a) Identify X and Y. Also write their formulae showing the functional group present in them.
(b) Write a chemical equation for the reaction involved.
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Explain the following term with example.
Monomer
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Ethyl alcohol to Ethane
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- It turns lime water milky.
- It is evolved with brisk effervescence.
- It has a smell of burning sulfur.
- It is also a by-product of respiration.
Ester is a sweet-smelling compound.
Write the answers to the questions by observing the following figure.
- Write the chemical reaction shown in the figure above in the form of a balanced equation.
- Write the name of the gas coming out of the large test tube in the above chemical reaction.
- Why do small bubbles appear in the small test tube?
- What is the change in colour of lime water?
Anita added a drop each of diluted acetic acid and diluted hydrochloric acid on pH paper and compared the colors. Which of the following is the correct conclusion?
Write an equation showing saponification.
