The concentration of hydrogen peroxide in an antiseptic solution was determined by titration with 0.0200 M potassium permanganate solution. 20.00 mL of the peroxide
solution were acidified and titrated with the potassium permanganate solution. An
average titre of 18.93 mL was required. The concentration of the hydrogen peroxide in
the solution was ...

2 mole MnO2 : 5 mole H202
A) 0.2366 M
B) 0.5915 M
C) 0.04733 M
D) 0.1183 M