`5H_(2)C_(2)O_(4)(aq)+2MnO_(4)(aq)+6H^(+)(aq) to 2Mn^(2+)(aq)+10CO_(2)(g)+8H_(2)O(l)` Oxalic acid, `H_(2)C_(2)O_(2)` , reacts with permanganate ion accroding to the balanced equation above. How many mL of 0.0154 M `KMnO_(4)` solution are required to react with 25.0mL of 0.0208 M `H_(2)C_(2)O_(4)` solution?

Options

A. 13.5 mL
B. 18.5 ml
C. 33.8 ml
D. 84.4 mL

Answer

A

Explanation

mmol of `H_(2)C_(2)O_(4) = 25 xx 0.0208 = 0.52`
 `implies` mmol of `KMnO_(4) "required" = (2)/(5) xx 0.52 = 0.208`
`implies` volume of `KMnO_(4) "required" =(0.208)/(0.0154) = 13.5 mL`