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Question

50 ml of 1M oxalic acid is shaken with 0.5 g of wood charcoal. The final concentration of the solution after adsorption is 0.5 M. Calculate the amount of oxalic acid adsorbed per gram charcoal.


A

1.575 g

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B

0.05 g

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C

3.15 g

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D

None

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Solution

The correct option is C

3.15 g


Amount of oxalic acid present initially =1×501000×63=3.15g
Amount after adsorption =0.5×501000×63=1.575g
Amount adsorped =1.575g
Adsorption per gram =1.5750.5=3.15g


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