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प्रश्न
Write the molecular formula of the given compound.
Ethanoic acid
उत्तर
Ethanoic acid- CH3COOH or C2H4O2
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संबंधित प्रश्न
A student adds 2 mL of acetic acid to a test tube containing 2 mL of distilled water. He then shakes the test tube well and leaves it to settle for some time. After about 5 minutes he observes that in the test tube there is :
(A) a clear transparent colourless solution
(B) a clear transparent pink solution
(C) a precipitate settling at the bottom of the test tube
(D) a layer of water the layer of acetic acid
In order to study saponification reaction, we first prepare 20% solution of sodium hydroxide. If we record the temperature of this solution just after adding sodium hydroxide flakes to water and also test its nature using litmus, it may be concluded that the process of making this solution is
(A) exothermic and the solution is alkaline
(B) endothermic and the solution is alkaline
(C) endothermic and the solution is acidic
(D) exothermic and the solution is acidic
When you add a few drops of acetic acid to a test-tube containing sodium bicarbonate powder, which one of the following is your observation?
(A) No reaction takes place
(B) A colourless gas with pungent smell is released with brisk effervescence
(C) A brown coloured gas is released with brisk effervescence
(D) Formation of bubbles of a colourless and odourless gas
Write the IUPAC names, common names and formulae of the first two members of the homologous series of carboxylic acids.
What is the common name of methanol?
Fill in the following blank with a suitable word:
The organic acid present in vinegar is ______.
Choose those compounds from the following which can turn blue litmus solution red:
HCHO, CH3COOH, CH3OH, C2H5OH, HCOOH, CH3CHO
Give reasons for your choice.
What happens when ethanoic acid reacts with sodium carbonate? Write chemical equation of the reaction involved.
Which of the following molecular formula corresponds to ethylbutanoate ester?
(a) C5H10O2
(b) C6H12O2
(c) C7H14O2
(d) C8H16O2
Name the products formed and give appropriate chemical equations for the following:
sodium reacting with ethyl alcohol.
What do you notice when acetic acid reacts with metals?
While studying saponification reactions, the following comments were noted down by the students :
(I) Soap is a salt of fatty acids.
(II) The reaction mixture is basic in nature.
(III) In this reaction heat is absorbed.
(IV) This reaction is not a neutralisation reaction.
Which of these are the correct comments ?
(A) I and III only
(B) I, II and III
(C) II, III and IV
(D) I and II only
Name the functional group present in the following compound:
C2H5CHO
Distinguish between esterification and saponification reactions with the help of chemical equations for each.
Ketone : –CO– : : Ester : _______
What happens when a small piece of sodium is dropped in ethanol? Write the equation for this reactions.
Write an equation showing saponification.
Write the chemical equation for the following:
Esterification Reaction
Give the balanced chemical equation of the following reaction:
Neutralization of NaOH with ethanoic acid.
