Analysis of hydrogen peroxide solutions

Question

Assignment:

Molarity of KMnO₄: .2 M
Volume of H₂O₂: 10 mL

Titration of KMnO₄ and new H₂O₂
Trial 1(Rough) Trial 2(Fine) Trial 3(Fine)
Initial volume 12.00mL    12.00mL    12.00mL
Final volume 13.98mL    12.10mL    12.05mL

Titration of KMnO₄ and old H₂O₂ (Fine Titrations Only)
Trial 1(Rough) Trial 2(Fine) Trial 3(Fine)
Initial volume 12.00mL    12.00mL    12.00mL
Final volume 12.99mL    12.10mL    12.05mL

Calculations/Interpretations: Show all math performed (give the formula, show your setup, and give the result. Use proper significant figures and include proper labels. Also, answer ALL questions asked in the lab.

Trial 2 Trial 3 Average
Volume of KMnO₄ (new H₂O₂):
Volume of KMnO₄ (old H₂O₂):

Moles KMnO₄ (new H₂O₂):
Moles KMnO₄ (old H₂O₂):

Balanced equation:
2 KMnO₄ + 5 H₂O₂ + 3 H₂SO₄ → K₂SO₄ + 2 MnSO₄ + 8H₂O + 5 O₂

Using the average values from trials 2 and 3 and the balanced equation, calculate the following:
Moles H₂O₂ (new):
Moles H₂O₂ (old):

Molarity H₂O₂ (new):
Molarity H₂O₂ (old):