Tuesday
September 2, 2014

Homework Help: Chem

Posted by Anonymous on Saturday, May 7, 2011 at 12:54pm.

For the following electrochemical cell:
Fe(s) Fe2+(aq) MnO4–(aq) Mn2+(aq) Pt(s)

Which letter corresponds to the correct balanced chemical equation in an acidic solution?


A. Fe(s) + 8H+(aq) + MnO4–(aq)Mn2+(aq) + 4H2O(l) + Fe2+(aq)
B. 5Fe(s) + 16H+(aq) + 2MnO4–(aq)2Mn2+(aq) + 8H2O(l) + 5Fe2+(aq)
C. Fe(s)+8H+(aq)+MnO4–(aq)+Pt2+(aq)Mn2+(aq)+4H2O(l)+Fe2+(aq)+Pt(s)
D. 2Mn2+(aq) + 8H2O(l) + 5Fe2+(aq)5Fe(s) + 16H+(aq) + 2MnO4–(aq)
E. Mn2+(aq)+4H2O(l)+Fe2+(aq)+Pt(s)Fe(s)+8H+(aq)+MnO4–(aq)+Pt2+(aq)

What reaction is occurring at the cathode?


A. Mn2+(aq) + 4H2O(l)5e– + 8H+(aq) + MnO4–(aq)
B. Fe(s)Fe2+(aq) + 2e–
C. Fe2+(aq) + 2e–Fe(s)
D. 5e– + 8H+(aq)+MnO4–(aq)Mn2+(aq) +4H2O(l)
E. Pt(s)Pt2+ + 2e–

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chem - For the following electrochemical cell: Fe(s) Fe2+(aq) MnO4–(aq) Mn2+(aq...
Chemistry - For the following electrochemical cell: Fe(s) | Fe2+(aq) || MnO4–(aq...
Chemistry - For the following electrochemical cell: Fe(s)/Fe2+(aq)//MnO4–(aq), ...
Chemistry - For the following electrochemical cell: Fe(s) / Fe2+(aq) // MnO4–(aq...
Chemistry - For the following electrochemical cell: Fe(s) / Fe2+(aq) // MnO4–(aq...
Chemistry - What is the reduction half-reaction for the reaction between iron(...
Chemistry - What is the reduction half-reaction for the reaction between iron(II...
balanced equation - ? MnO4– + ?H+ + ?C2O42– --> ?Mn2+ + ?H2O + ?CO2 what's ...
CHEMISTRY - Given the following standard reduction potentials in acid solution...
chemistry - permanganate ion oxidizes hydrogen peroxide to oxygen gas and Mn2+ ...

Search
Members