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Question

Calculate the amount of crystalline oxalic acid (equivalent weight = 63 g/eq.) required to prepare 250 mL of a N10 oxalic acid solution.

A
0.158 g
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B
1.575 g
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C
15.75 g
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D
6.348 g
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Solution

The correct option is B 1.575 g
Normality=gram equivalentstotal volume of the solution in mL×1000
Gram equivalents of oxalic acid = 0.11000×250=0.025 equivalent
Number of gram equivalents = given amountequivalent weight
Amount of oxalic acid required = 0.025×63=1.575 g

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