Answer to Question #90704 in General Chemistry for Abbie Chandler

Question

Based on the number of moles of H2O2 consumed in the reaction, how many grams of H2O2 were in the new hydrogen peroxide solution? The molar mass of H2O2 is 34.0147 g/mol.

Answer 1

H2O2(aq) → O2(g) + 2H+(aq) + 2e-

MnO-4(aq) + 8H+(aq) + 5e- →Mn2+(aq) + 4H2O(l)

So to calculate the mass H₂O₂ in the new hydrogen peroxide solution, we must have the volume of solution and molar concentration of H2O2/KMnO4. Without data, it's not possible to give a answer.