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The value of the ion product constant fo...

The value of the ion product constant for water, `(K_(w))` at `60^(@)`C is `9.6xx10^(-14)` `M^(2)` what is the `[H_(3)O^(+)]` of a neutral aqueous solutoin at `60^(@)`C and an aqueous solution with a pH=7.0 at `60 ^(@)`C are respectively?

A

`3.1xx10^(-8)` acidic

B

`3.1xx10^(-7)`, neutral

C

`3.1xx10^(-8)`, basic

D

`3.1xx10^(-7)`, basic

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Knowledge Check

  • Which of the following salt solution may have pH=7 at 60^(@)C ?

    A
    NaCI
    B
    `CH_(3)COONa`
    C
    `NH_(4)CI`
    D
    `K_(2)SO_(4)`

  • The ionic product of water at 60^(@)C is 9.55 xx 10^(-14) "mole"^(2)L^(-2) . The dissociation constant of water at the same temperature is

    A
    `1.09 xx 10^(-15)`
    B
    `5.2 xx 10^(-16)`
    C
    `1.8 xx 10^(-16)`
    D
    `1.72 xx 10^(-15)`

  • Assertion : The dissociation constant of water at 60^(@)C is 10^(-13) . Reason : The pH of water is 6.5 and that it behaves as acid at 60^(@)C .

    A
    If both assertion and reason are true and the reason is the correct explantion of the assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
    C
    If assertion is true but reason is false.
    D
    If assertion is false but reason is true.

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