2.52 ~g of oxalic acid dehydrate was disved in 100 ml of water, 10 ~mL of this ution was diluted to 500 mL . The normality of the final ution and the amount of oxalic acid ( mg / mL ) in the ution are respectively-

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Correct answer: C. 0.04 ~N , 3.60

Initial Normality N = 2.52 1000 63 100 =0.4 array l _ COOH N ₁ ~V ₁= N ₂ ~V ₂ 0.4 10= N ₂ 500 ~N ₂= 0.4 50 =0.08 ~N array Then final weight N= w 1000 E V_ m 0.08= w 1000 63 500

2.52 ~g of oxalic acid dehydrate was disved in 100 ml of water, 10 ~mL of this ution was diluted to 500 mL . The normality of the final ution and the amount of oxalic acid ( mg / mL ) in the ution are respectively-

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