Assertion :The second dissociation constant of fumaric acid is greater than maleic acid. Reason: Higher the dissociation constant of acid , more is the acidic character.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

Both fumaric and maleic acids have two ionisable $H^{+}$ ions i.e protons. The maleate monoanion shows intramolecular hydrogen bonding, whereas furmarate monoanion shows intermolecular hydrogen bonding. .

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Similar questions

Q. Read the assertion and reason carefully to mark the correct option out of the options given below:

(a)

If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b)

If both assertion and reason are true but reason is not the correct explanation of the assertion.

(c)

If assertion is true but reason is false.

(d)

If assertion is false but reason is true.
Assertion: 4-nitrophenol is more acidic than picric acid.
Reason: Phenol is a weaker acid than carbonic acid.

Q. Read the assertion and reason carefully to mark the correct option out of the options given below:

(a)

If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b)

If both assertion and reason are true but reason is not the correct explanation of the assertion.

(c)

If assertion is true but reason is false.

(d)

If assertion is false but reason is true.
Assertion: 4-nitrophenol is more acidic than picric acid.
Reason: Phenol is a weaker acid than carbonic acid.

Assertion (A) Ethanol is a weaker acid than phenol.
Reason (R) Sodium ethoxide may be prepared by the reaction of ethanol with aqueous NaOH.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

Assertion (A) Like bromination of benzene, bromination of phenol is also carried out in the presence of Lewis acid.
Reason (R) Lewis acid polarises the bromine molecule.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

Assertion (A) p-nitrophenol is more acidic than phenol.
Reason (R) Nitro group helps in the stabilisation of the phenoxide ion by dispersal of negative charge due to resonance.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

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