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प्रश्न
Write the molecular formula of the given compound.
Ethanoic acid
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उत्तर
Ethanoic acid- CH3COOH or C2H4O2
संबंधित प्रश्न
In an experiment to study the properties of ethanoic acid, a student takes about 3 mL of ethanoic acid in a dry test tube. He adds an equal amount of distilled water to it and shakes the test tube well. After some time he is likely to observe that
(A) a colloid is formed in the test tube.
(B) the ethanoic acid dissolves readily in water.
(C) the solution becomes light orange.
(D) water floats over the surface of ethanoic acid.
List two uses of esters.
Identify the term or substance based on the descriptions given below
Ice like crystals formed on cooling an organic acid sufficiently.
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
What happens when ethanoic acid reacts with sodium carbonate? Write chemical equation of the reaction involved.
An organic compound X of molecular formula C2H4O2 gives brisk effervescence with sodium hydrogen carbonate. Give the name and formula of X.
Esters are sweet-smelling substances and are used in making perfumes. Describe an activity for the preparation of an ester with the help of a well labelled diagram. Write an equation for the chemical reaction involved in the formation of the ester. Also write the names of all the substances involved in the process of esterification.
Write the names of the first three members of the carboxylic acid series.
What do you observe when acetic acid is added to ethyl alcohol in the presence of sulphuric acid?
If you are asked to report your observations about the following two properties of acetic acid, what would you report?
(i) Odour
(ii) Effect on litmus
A student takes 2 mL acetic acid in a dry test tube and adds a pinch of sodium hydrogen carbonate to it. He makes the following observations:
I. A colourless and odourless gas evolves with a brisk effervescence.
II. The gas turns lime water milky when passed through it.
III. The gas burns with an explosion when a burning splinter is brought near it.
IV. The gas extinguishes the burning splinter that is brought near it.
The correct observations are:
(A) I, II, and III
(B) II, III and IV
(C) III, IV and I
(D) IV, I and II
Which of the following observations is true about dilute solution of acetic acid?
(A) It smells like vinegar and turns red litmus blue
(B) It smells like onion and turns blue litmus red
(C) It smells like orange and turns red litmus blue
(D) It smells like vinegar and turns blue litmus red
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
Name the first four members of alphatic carboxylic acid.
How Will You Carry Out the Following Conversions?
Ehane to acitic acid
Write balanced euation for the following :
Ethane is burnt in air.
Write the chemical equation for the following:
Combustion of methane
Write a balanced chemical equation for the following:
Monochloroethane is hydrolysed with aqueous KOH.
Give a balanced chemical equation for the following conversion:
Calcium carbide to ethyne.
Draw the structural formula for the following:
Ethanoic acid
Rewrite the following statement by selecting the correct option.
The formula of ethanoic acid is _____________.
Mineral acids are stronger acids than carboxylic acids because
- mineral acids are completely ionised
- carboxylic acids are completely ionised
- mineral acids are partially ionised
- carboxylic acids are partially ionised
Vinegar is a solution of ______.
What happens when a small piece of sodium is dropped in ethanol? Write the equation for this reaction.
Write the chemical equation for the following:
Esterification Reaction
Write the chemical equation for the following:
Saponification Reaction
A spatula full of sodium carbonate is taken in a test tube and 2 mL of dilute ethanoic acid is added to it.
Suggest a method of testing the gas liberated in the reaction.
