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Standard XII

Chemistry

Buffer Solutions

Assertion :Mi...

Question

Assertion :Mixture of ${C H}_{3} C O O H$ and ${C H}_{3} C O O {N H}_{4}$ is not a buffer solution. Reason: Acid buffer contains the mixture of weak acid and its salt with strong base.

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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Assertion is incorrect but Reason is correct

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Solution

The correct option is D Assertion is incorrect but Reason is correct
A buffer solution is one which resists changes in pH when small quantities of an acid or an alkali are added to it.

Mixture of $C H_{3} C O O H$ and $C H_{3} C O O N H_{4}$ is not a buffer solution. So Assertion is incorrect.
An acidic buffer solution is simply one which has a pH less than 7. Acidic buffer solutions are commonly made from a weak acid and one of its salts - often a sodium salt.EX: $C H_{3} C O O H + C H_{3} C O O N a$ .
Assertion is incorrect but Reason is correct.
Hence option D is correct.

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Similar questions

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.

Q. Assertion: The compressibility factor for

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Assertion

Lithium sulphate does not form alums.

Reason

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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.
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(c) Assertion is correct statement but reason is wrong statement.
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Assertion :Mixture of CH3COOH and CH3COONH4 is not a buffer solution. Reason: Acid buffer contains the mixture of weak acid and its salt with strong base.

Assertion :Mixture of ${C H}_{3} C O O H$ and ${C H}_{3} C O O {N H}_{4}$ is not a buffer solution. Reason: Acid buffer contains the mixture of weak acid and its salt with strong base.