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pH of a weakacid in 0.1 M solution is 4....

pH of a weakacid in 0.1 M solution is 4.3. Which statements are correct ?

A

its 0.01 M Solution has `PH gt 4.3`

B

its 0.01 M solution has `pH lt 4.3 `

C

its 0.01 M solution degree of dissociation is less than in 0.1 M solution

D

its 0.01M solution degree of dissociation in less than in 0.1 M solution

Text Solution

Verified by Experts

The correct Answer is:
A, C
` pH =[(1)/(2) [P^(ka) - log] C]`
` 4.3 =(1)/(2) [P^(ka) -log 10 ^(-1) ] rArrP^(ka) =7.6`
` pH =(1)/(2) [7.6 -log 10 ^(-2) ]rArr pH=4.8`
As dil `uparrow ,alpha " also" uparrow `
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Knowledge Check

  • P^(H) of a weak acid in 0.1 M solution is 4.3 Which statement are correct?

    A
    its 0.01 M Solution has `PH gt 4.3`
    B
    its 0.01 M solution has `pH lt 4.3 `
    C
    its 0.01 M solution degree of dissociation is less than in 0.1 M solution
    D
    its 0.01M solution degree of dissociation in less than in 0.1 M solution

  • The pH of a 0.005 M H_2SO_4 solution is

    A
    `5.0`
    B
    `2.0`
    C
    `2.3`
    D
    `3.3`

  • The pH of a 0.005 M H_2SO_4 solution is

    A
    `5.0`
    B
    `2.0`
    C
    `2.3`
    D
    `3.3`

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    The pH of a solution of H_(2)O_(2) is 6.0. Some chlorine gas is bubbled into this solution. Which of the following is correct?

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