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A base dissolved in water yields a solut...

A base dissolved in water yields a solution with a hydroxide ion concentration of `0.05 mol litre^(-1)`. The solution is

A

Basic

B

Acid

C

Neutral

D

Both (a) and (b)

Text Solution

Verified by Experts

The correct Answer is:
A
`[OH^(-)]` ion conc. `0.05 (mol)/(l) = 5 xx 10^(-2) (mol)/(l)`
`pOH = -log [OH^(-)] = -log[ 5xx 10^(-2)]`
`pOH = 1.30, pH + pOH = 14`.
`pH = 14 - pOH = 14 - 1.30 = 12.7`.
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Knowledge Check

  • A base dissolved, in water yields a solution with a hydroxyl ion concentration of 0.5 mol "litre"^(-1) . The solution is

    A
    Basic
    B
    Acid
    C
    Neutral
    D
    Either (b) or (c)

  • If the pH of a solution is 2, the hydrogen ion concentration in moles per litre is

    A
    `1xx10^(-14)`
    B
    `1xx10^(-2)`
    C
    `1xx10^(-7)`
    D
    `1xx10^(-12)`

  • The pH of an aqueous solution having hydroxide ion concentration as 1 xx 10^(-5) is

    A
    5
    B
    9
    C
    4.5
    D
    11

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