(A) If water is heated to 350 K, then pOH will increase to 8.
(R) $K_{w}$ increases with increase in temperature.

Both (R) and (A) are true and reason is the. correct explanation of assertion

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Both (R) and (A) are true but reason is not correct explanation of assertion

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Assertion (A) is true but reason (R) is false

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Assertion (A) and reason (R) both are false

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Assertion (A) is false but reason (R) is true

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Solution

The correct option is A Both (R) and (A) are true and reason is the. correct explanation of assertion
If water is heated to 350 K, then pOH will increase to 8.
$K_{w}$ increases with increase in temperature. As $K_{w}$ increases pOH increases, pH decreases.

So both (R) and (A) are true and reason is the. correct explanation of assertion.
Hence option A is correct.

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This question consists of two statements, namely, Assertion (A) and Reason (R). For selecting the correct answer, use the following code:

(a) Both Assertion (A) and Reason (R) are true and Reason (R) correct explanation of Assertion (A).

(b) Both Assertion (A) and Reason (R) are true but Reason (R) is not a correct explanation of Assertion (A).

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(A) If water is heated to 350 K, then pOH will increase to 8. (R) Kw increases with increase in temperature.

(A) If water is heated to 350 K, then pOH will increase to 8.
(R) $K_{w}$ increases with increase in temperature.