Calculate the mass of anhydrous oxalic acid, which can be oxidised ...

Calculate the mass of anhydrous oxalic acid, which can be oxidised to \( \mathrm{CO}_{2}(g) \) by \( 100 \mathrm{~mL} \) of an \( \mathrm{MnO}_{4}^{-} \)solution, \( 10 \mathrm{~mL} \) of which is capable of oxidising \( 50 \mathrm{~mL} \) of \( 1 \mathrm{~N} \mathrm{I}^{-} \)to \( \mathrm{I}_{2} \).
(a) \( 45 \mathrm{~g} \)
(b) \( 22.5 \mathrm{~g} \)
(c) \( 30 \mathrm{~g} \)
(d) \( 12.25 \mathrm{~g} \)