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Standard IX

Chemistry

Arrehenius Theory of Acids and Bases

Assertion :Wh...

Question

Assertion :When a small amount of an acid (or) base is added to water $p H$ changes. Reason: Addition of acid or base increases the ionization of water.

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 C Assertion is correct but Reason is incorrect
The concentration of $[H^{+}$ ] or $[O H^{-}]$ ions changes because of an addition of acid/base, not because of the change in ionization of water and a small amount of acid and base does not affect ionisation of water.

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Assertion :When a small amount of an acid (or) base is added to water pH changes. Reason: Addition of acid or base increases the ionization of water.

The correct option is C Assertion is correct but Reason is incorrectThe concentration of [H+] or [OH−] ions changes because of an addition of acid/base, not because of the change in ionization of water and a small amount of acid and base does not affect ionisation of water.

Assertion :When a small amount of an acid (or) base is added to water $p H$ changes. Reason: Addition of acid or base increases the ionization of water.

The correct option is C Assertion is correct but Reason is incorrect
The concentration of $[H^{+}$ ] or $[O H^{-}]$ ions changes because of an addition of acid/base, not because of the change in ionization of water and a small amount of acid and base does not affect ionisation of water.