1.
What mass of MnO2\mathrm{MnO_2} is reduced by 35 mL35\,\text{mL} of 0.16 N0.16\,\text{N} oxalic acid (H2C2O4\mathrm{H_2C_2O_4}) in acidic solution? The skeleton equation is:
MnO2+H2C2O4+H+→Mn2++CO2+H2O\mathrm{MnO_2} + \mathrm{H_2C_2O_4} + \mathrm{H^+} \rightarrow \mathrm{Mn^{2+}} + \mathrm{CO_2} + \mathrm{H_2O}