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The hydrolysis constant of NaX (K(a) of ...

The hydrolysis constant of `NaX` (`K_(a)` of HX is `2 xx 10^(-6)`) is

A

`5xx10^(-9)`

B

`2xx10^(-8)`

C

`5xx10^(-6)`

D

`10^(-7)`

Text Solution

Verified by Experts

The correct Answer is:
A
`K_(h)=(kw)/(k_(a))=(10^(-14))/(2xx10^(-6))`
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Knowledge Check

  • The Hydrolysis constant of MX is (Given, K_(b) of MOH is 2 xx 10^(-6) and K_(a) of HX is 5 xx 10^(-7) )

    A
    `10^(2)`
    B
    `10^(-2)`
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  • Calculate the hydrolysis constant of a salt of week acid (K_(a) = 2 xx 10^(-6)) and of a weak base (K_(b) = 5 xx 10^(-7))

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    `10^(-4)`
    B
    `10^(-2)`
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    D
    `10^(-8)`

  • Hydrolysis constant of NH_(4)^(+) is 5.55 xx 10^(-10) . The ionisation constant of NH_(4)^(+) is

    A
    `1.8xx 10^(9)`
    B
    `5.55xx10^(-10)`
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    `5.55xx10^(4)`
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