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प्रश्न
Consider the following organic compounds:
HCHO, C2H5OH, C2H6, CH3COOH, C2H5CI
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.
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उत्तर
C2H5OH (ethanol) and CH3COOH (ethanoic acid) are the compounds which can react with each other, in the presence of concentrated sulphuric acid, to form a sweet smelling ester called ethylethanoate. Its formula is CH3 -COO-CH2-CH3.
The chemical equation for the above reaction is as follows
`C_2 H_5 OH + CH_3 COOH` 
`CH_3 COOC_2 H_5 + H_2 O`
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संबंधित प्रश्न
The molecular formula of acetic acid is _________ .
(a) CH3COOH
(b) CH3 – CH3
(c) C6H6
(d) C2H4
Complete the following chemical equations: C2H5OH+O2→
Draw the structure for the following compound.
Ethanoic acid
Give the common names and IUPAC names of the following compounds of CH3COOH.
What is the common name of methanol?
The organic acid present in vinegar is ______.
What type of compound is formed when a carboxylic acid reacts with an alcohol in the presence of conc. H2SO4?
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.
An organic compound A (molecular formula C2H4O2) reacts with Na metal to form a compound B and evolves a gas which burns with a pop sound. Compound A on treatment with an alcohol C in the presence of a little of concentrated sulphuric acid forms a sweet-smelling compound D (molecular formula C3H6O2). Compound D on treatment with NaOH solution gives back B and C. Identify A, B, C and
Name the product formed and give the appropriate chemical equation for the following:
Sodium reacting with ethyl alcohol.
How is acetic acid prepared from acetylene?
Acetic acid is a typical acid. Write one equation in case of its reactions with a bicarbonate.
What do you observe when acetic acid is added to ethyl alcohol in the presence of sulphuric acid?
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
How will you carry out the following conversions?
Ethene to acetic acid
Write a balanced equation for the following:
Write the equation for the preparation of ethylene from ethyl alcohol.
Identify the term or substance based on the descriptions given below:
Ice like crystals formed on cooling an organic acid sufficiently.
Ethanoic acid _________.
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
Draw the structural diagram of:
Ethanoic acid
