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Dissociation constant of water at 25^(@)...

Dissociation constant of water at `25^(@)` C is

A

`1.0 xx 10 ^(-14) `

B

` 1xx 10 ^(14)`

C

` 14`

D

`1.8xx 10^(-16) `

Text Solution

Verified by Experts

The correct Answer is:
D
` K_(diss) =(K_W)/( 55.5) =(1xx 10^(-14))/( ((1000)/(18)) )= 18 xx 10^(-17) = 1.8 xx 10 ^(-16) `
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Knowledge Check

  • At 100^(@)C , ionic product of water is 51.3 xx 10^(-14) M^(2) . Then dissociation constant of water at 100^(@) C is

    A
    `1.72 xx 10^(-15)`
    B
    `1.009 xx 10^(-15)`
    C
    `9.243 xx 10^(-15)`
    D
    `5.2 xx 10^(-16)`

  • The dissociation constant of water at 10^(@) C is 5.31 xx 10^(-17) . The ionic product of water is

    A
    `0.295 xx 10^(-14) "mole"^(2) lit^(-2)`
    B
    `0.6 xx 10^(-14) "mole"^(2) lit^(-2)`
    C
    `0.54 xx 10^(-14) "mole"^(2) lit^(-2)`
    D
    `0.82 xx 10^(-14) "mole"^(2) lit^(-2)`

  • The ionic product of water at 60^(@)C is 9.55 xx 10^(-14) "mole"^(2) lit^(-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)`

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