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Salt of Weak Acid and Strong Base

It's a soluti...

Question

It's a solution made by the combination of a weak acid and the salt of its conjugate base. It is called ________ solution.

A

a Bronsted acid

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B

a Bronsted base

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C

a weak base

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D

a buffer

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Solution

The correct option is D a buffer
A solution of a weak acid and its salt with a strong base is a buffer.
Since the conjugate base of a weak acid is a strong base, solution of a weak acid and the salt of its conjugate base is also a buffer solution.

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Similar questions

Q. When an aqueous solution contains both a weak acid (or weak base) and its conjugate base (or conjugate acid) it is called:

Q. Assertion: The conjugate base of a weak acid is a strong base.
Reason: Elements that are strong Bronsted-Lowry acids are not strong Bronsted-Lowry bases.

Q. The solution that is made by mixing appropriate amounts of a weak acid and its salt of strong base is called ________.

The pH of the buffer solution does not change when an acid or a base is added.

Buffer solution consists of a mixture of a weak acid and its salt with a strong base.

A buffer is a solution of weak acid and its conjugate base or a weak base and its conjugate acid. It resists the change in

p H

, when small amount of strong acid or base is added to it. Buffer solutions have wide applications.

H C l

gas is passed through an aqueous solution of 0.1M 1-aminopropane

(P r N H_{2})

p H

reaches 9.71. Calculate the ratio of

[P r N H_{2}] / [P r N H_{3}^{+}]

in this solution.

[K_{a} (P r N H_{3}^{+}) = 1.96 \times 10^{- 11}

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