View the step-by-step solution to:



Finding concentration of KMnO4:

Redox Half reaction of

titration #1.

Fe2+, SO42-, NH4+, H2O, K+, MnO4-, H+

SOA:​MnO4- + 8H+ + 5e- → Mn2+ + 4H2O 

SRA:​(Fe2+ → Fe3+ + e-) x 5


Predicted Redox Reaction: MnO4- + 8 H+ + 5 Fe2+ → Mn2+ + 4 H2O + 5 Fe3+



​Therefore, the concentration of KMnO4(aq) is 0.00728 mol/L.



Finding concentration of H2O2:


Redox half reaction of titration #2







Predicted Redox Reaction: 


Using Stoichiometry to find Concentration of H2O2.



Since is diluted by a factor of 40, the concentration is multiplied by 40.




Percent concentration of H2O2(aq) is 2.80% according to the table in the textbook.​

Recently Asked Questions

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.


Educational Resources
  • -

    Study Documents

    Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

    Browse Documents
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question
Ask Expert Tutors You can ask 0 bonus questions You can ask 0 questions (0 expire soon) You can ask 0 questions (will expire )
Answers in as fast as 15 minutes