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प्रश्न
Write the characteristics of ethanoic acid.
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उत्तर
- Ethanoic acid is a colourless liquid at ordinary temperature.
- Its boiling point is 118 °C.
- Melting point of pure ethanoic acid is 17 °C.
- Its aqueous solution is acidic in nature and hence, turns blue litmus red.
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संबंधित प्रश्न
Complete the following chemical equations : C2H5OH + Na →
Fill in the blanks from the choices given within brackets:
The basicity of acetic acid is-------- (3, 1, 4).
Draw the structure for the following compound:
Propanoic acid
Name the gas evolved when ethanoic acid is added to sodium carbonate. How would you prove the presence of this gas?
The organic acid present in vinegar is ______.
Consider the following organic compounds:
HCHO, C2H5OH, C2H6, CH3COOH, C2H5Cl
Choose two compounds which can react in the presence of conc. H2SO4 to form an ester. Give the name and formula of the ester formed.
Consider the following organic compound:
CH3OH, C2H5OH, CH3COCH3, CH3COOH, C2H5COOH, C4H9COOC2H5, CH4, C2H6, CH3CHO, HCHO
Out of these compound:
- Which compound is most likely to be sweet-smelling?
- Which compound on treatment with conc. H2SO4 at 170°C forms an alkene?
- Which compound on repeated chlorination forms chloroform?
- Which compound is added to alcohol to denature it?
- Which compound is a constituent of vinegar?
- Which compound is used to sterilise wounds and syringes?
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.
Write the names of the first three members of the carboxylic acid series.
Give the structural formulae of acetic acid.
Which one of the following are the correct observations about acetic acid?
(A) It turns blue litmus red and smells like vinegar
(B) It turns blue litmus red and smells like burning sulphur
(C) It turns res litmus blue and smells like vinegar
(D) It turns red litmus blue and has a fruity smell
What is thr boilng point of acetic acid?
Fill in the blank with appropriate word/words.
Vinegar is a solution of about ________per cent ________in water.
Distinguish between esterification and saponification reactions with the help of chemical equations for each.
With a labelled diagram describe in brief an activity to show the formation of ester.
Explain the following reaction with an example.
Esterification
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 of lime appear in the small test tube?
- What is the change in colour of lime net?
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?
A spatula full of sodium carbonate is taken in a test tube and 2 mL of dilute ethanoic acid is added to it.
Write a chemical equation for the reaction.
Name the oxidising agent used in the conversion of ethanol to ethanoic acid.
