Assertion :If an acid is added to pure water, it increases the waters pH. Reason: Adding an acid to water raises the hydrogen ion concentration in the water.

Both Assertion and Reason are correct and the Reason is the correct explanation of the Assertion

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Both Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion

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The Assertion is correct and the Reason is incorrect

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The Reason is incorrect and the Reason is correct

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Solution

The correct option is D The Reason is incorrect and the Reason is correct
Acid produces $H^{+}$ ion as result
$(p H = - {l o g}_{10} H^{+})$ decreases
Thus Assetion is incorrect and the Reason is correct.

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Similar questions

Q. For the following Assertion and Reason, the correct option is:
Assertion: The

p H

of water increases with increase in temperature.

Reason: The dissociation of water into

H^{+}

and

O H^{-}

an exothermic reaction.

Assertion (A) Addition reaction of water to but-1-ene in acidic medium yields butan-1-ol.
Reason (R) Addition of water in acidic medium proceeds through the formation of primary carbocation.
(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
If BOD level of water in reservoir is less than 5 ppm it is not polluted.

Reason
High biological oxygen demand means low activity of bacteria in water.

Assertion (A) o-nitrophenol is less soluble in water than the m- and p-isomers.
Reason (R) m and p-nitrophenols exist as associated molecules.
(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) p-nitrophenol is more acidic than phenol.
Reason (R) Nitro group helps in the stabilisation of the phenoxide ion by dispersal of negative charge due to resonance.
(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 :If an acid is added to pure water, it increases the waters pH. Reason: Adding an acid to water raises the hydrogen ion concentration in the water.

The correct option is D The Reason is incorrect and the Reason is correctAcid produces H+ ion as result(pH=−log10H+) decreasesThus Assetion is incorrect and the Reason is correct.

The correct option is D The Reason is incorrect and the Reason is correct
Acid produces $H^{+}$ ion as result
$(p H = - {l o g}_{10} H^{+})$ decreases
Thus Assetion is incorrect and the Reason is correct.