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Calcium lactate is a salt of weak organi...

Calcium lactate is a salt of weak organic acid and strong base represented as `Ca(LaC)_(2).` A saturated solution of `Ca(LaC)_(2)` contains 0.6 mole in 2 litre solution. pOH of solution is 5.60. If `90%` dissociation of the salt takes place then what is `pK_(a)` of lactic acid?

A

`2.8-log (0.54)`

B

`2.8+log(0.54)`

C

`2.8+log(0.27)`

D

None the these

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Calcium lactate is a salt of weak organic acid and represented as Ca(Lac)_(2) . A saturated solution of Ca(Lac)_(2) contains 0.13 mole of this salt in 0.50 litre solution. The pOH of this solution is 5.60 . Assuming complete dissociation of the salt , calculate K_(a) of lactic acid.

Calcium lactate is a salt of a weak organic acid and is represent as Ca(Lac)_(2) . A saturated solution of Ca(Lac)_(2) contains 0.13 mole of this slat in a 0.50-litre solution. The pOH of this solution is 5.60. Assuming a complete dissociation of the salt, calculate K_(a) of latic acid.

Knowledge Check

  • Calcium lactate is a salt of weak acid i.e., lactic acid having general formula Ca(LaC)_(2) . Aqueous solution of salt has 0.3 M concentration. pOH of solution is 5.60. If 90\% of the salt is dissociated then what will be the value of pK_(a) ?

    A
    `2.8-log(0.54)`
    B
    `2.8+log(0.54)`
    C
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    A
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