Assertion : $H_{2} S O_{4}$ acts as a base in the presence of $H C l O_{4}$ Reason: Perchloric acid is stronger acid than $H_{2} S O_{4}$

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 A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Perchloric acid is a stronger acid than $H_{2} S O_{4}$ so it acts as acid and $H_{2} S O_{4}$ acts as a base.

$H C l O_{4} + H_{2} S O_{4} \to H_{3} S O_{4}^{+} + C l O_{4}^{-}$

$H_{2} S O_{4}$ is accepting the $H^{+}$ from $H C l O_{4}$ .

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Similar questions

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.

Q. Read the assertion and reason carefully to mark the correct option out of the options given below:
Assertion: Nitrating mixture used for carrying our nitration of benzene consists of

c o n c . H N O_{3} + c o n c . H_{2} S O_{4} .

Reason :In presence of

H_{2} S O_{4}, H N O_{3}

acts as a base and produces

N O_{2}^{+}

ions.

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

Assertion (A) Phenols give o-and p-nitrophenol on nitration with conc. $H N O_{3} a n d H_{2} S O_{4}$ mixture.
Reason (R) - OH group in phenol is o-,p-directing.
(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) 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.

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Assertion :H2SO4 acts as a base in the presence of HClO4 Reason: Perchloric acid is stronger acid than H2SO4

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for AssertionPerchloric acid is a stronger acid than H2SO4 so it acts as acid and H2SO4 acts as a base.HClO4+H2SO4→H3SO+4+ClO−4H2SO4 is accepting the H+ from HClO4.

Assertion : $H_{2} S O_{4}$ acts as a base in the presence of $H C l O_{4}$ Reason: Perchloric acid is stronger acid than $H_{2} S O_{4}$