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Chemical Reactions

Acetic acid d...

Question

Acetic acid dissociates partialy in water as it is a weak acid.

A

True

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B

False

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Solution

The correct option is A True

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Q. Assertion :The pH of an aqueous solution of sodium acetate is more than

7

. Reason: Sodium acetate is a salt of a weak acid (acetic acid) and a strong base (NaOH). It undergoes hydrolysis in aqueous solutions.

C H_{3} C O O N a + H_{2} O \to C H_{3} C O O H + N a^{+} + O H^{-}

Acetic acid is weak acid and is partially dissociated whereas NaOH is a strong base and completely dissociated.

Read the above assertion and reason and choose the correct option regarding it.

Acetic acid ( ${CH}_{3} COOH$ ) is a weak acid because:

Q. When strong base

(N a O H)

is added to the weak acid (acetic acid,

{C H}_{3} C O O H

), then dissociation of acetic acid increases; this effect is known as:

Assertion: If HX is a weak acid,

X^{-}

particles will also be present in its dilute solution apart from those of water.

Reason: Weak acids dissociate partially.

Q. Two acids 'A' and 'B' were kept in beakers. Acid 'A' undergoes partial dissociation in water, whereas acid 'B' undergoes complete dissociation in water.
i) of the two acids 'A' and 'B'. Which is weak acid and which is strong acid ?
ii) Give one example for weak acid and strong acid.

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