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Calculate OH^(-) ion concentration in 0....

Calculate `OH^(-)` ion concentration in 0.08M solution of it.

Text Solution

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For a weak base, `[OH^(-)]=sqrt(K_(b)xxC)=sqrt(1.75xx10^(-5)xx0.08)`
`=1.183xx10^(-3)"mol "dm^(-3)`
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Knowledge Check

  • When OH^- ion concentration of a solution increases its

    A
    pH increases
    B
    pH increases
    C
    `H^+` ion concentration increases
    D
    pH remains constant

  • 0.1 mol of CH_(3)NH_(2)(K_(b)=5.0xx10^(-4)) is mixed with 0.08 mol of HCl and diluted to one litre. What will be the H^(+) ion concentration in the solution ?

    A
    `8xx10^(-2)M`
    B
    `8xx10^(-11)M`
    C
    `1.6xx10^(-11)M`
    D
    `8xx10^(-5)M`

  • When H^+ ion concentration of solution increases

    A
    ph increases
    B
    Ph decreases
    C
    no change in pH
    D
    POH increases

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