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

Oxalic acid NaOH
`N_(1)V_(1) = N_(2)V_(2)`
`[W/E xx 1000/V] xx V_(1) = N_(2)V_(2)`
`6.3/63 xx 1000/250 xx 10 = 0.1 xx V V = 40 mL`