50 mL of 1 M oxalic acid (molar mass=126gmol−1) is shaken with 0.5 g of wood charcoal. The final concentration of the solution after adsorption is 0.5 M. The amount of oxalic acid (in grams) adsorbed per gram of the charcoal is:
A
3.15
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B
1.575
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C
12.6
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D
6.3
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Solution
The correct option is D 6.3 50mLof1Moxalic acid=50×1mmol 50mLof0.5Moxalic acid=50×0.5mmol