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प्रश्न
Ethanoic acid has a .................... odour.
(a) Rotten eggs
(b) Pungent
(c) Vinegar-like
(d) Mild
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उत्तर
(b) Pungent
Ethanoic acid has a pungent odour.
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संबंधित प्रश्न
A student adds a spoon full of powdered sodium hydrogen carbonate to a flask containing ethanoic acid. List two main observations, he must note in his note book, about the reaction that takes place. Also write chemical equation foe the reaction.
When ethanol reacts with ethanoic acid in the presence of conc. H2SO4, a substance with fruity smell is produced. Answer the following:-
(i) State the class of compounds to which the fruity smelling compounds belong. Write the chemical equation for the reaction and write the chemical name of the product formed.
(ii) State the role of conc. H2SO4 in the reaction.
Consider the following comments about saponification reactions:
I. Heat is evolved in these reactions.
II. For quick precipitation of soap, sodium chloride is added to the reaction mixtures.
III. Saponification reactions are a special kind of neutralisation reactions.
IV. Soaps are basic salts of long-chain fatty acids.
The correct comments are
(a) I, II and III
(b) II, III and IV
(c) I, II and IV
(d) Only I and IV
Fill in the blanks from the choices given within brackets:
The basicity of acetic acid is-------- (3, 1, 4).
What is the common name of methanoic acid?
Draw the structure for the following compound:
Propanoic acid
Give the common name and IUPAC name of C2H5OH.
Which of the following will give brisk effervescence with sodium hydrogen carbonate and why?
CH3COOH, CH3CH2OH
What type of compound is formed when a carboxylic acid reacts with an alcohol in the presence of conc. H2SO4?
What is the physical state of CH3COOH?
The structural formula of an ester is :
Write the formula of the acid and the alcohol from which it is formed.
What do you observe when acetic acid is added to sodium bicarbonate?
Write the molecular formulae and structure formula of ethanic acid?
The functional group present in acetic acid is ______.
State the observation
When the gaseous product obtained by dehydration of ethyl alcohol is passed through bromine water.
Write the characteristics of ethanoic acid.
Which of the following substance produces brisk effervescence with baking soda solution?
The reaction between acetic acid and sodium carbonate is shown in the following figure.
Answer the questions with the help of a diagram.
- Which gas does come out as effervescence in the big test tube?
- What is the colour change in the lime water present in the small test tube?
- Write the related reaction.
Why is glacial acetic acid called so?
Give the balanced chemical equation of the following reaction:
Neutralization of NaOH with ethanoic acid.
