An aqueous solution of 6.3 g of oxalic acid dihydrate is made upto 250 mL. The volume of 0.1 N NaOH required to completely neutralise 10 mL of this solution is :

Options

A. 40 ml
B. 20 ml
C. 10 ml
D. 4 ml

Answer

A

Explanation

Normality of oxalic acid solution `= (6.3)/(250) xx (1000)/(63) = 0.4 N`
`N_(1)V_(1) = N_(2)V_(2) rArr 10 xx 0.4 = V xx 0.1 :. V = 40 ml`