Net Ionic Equation for Fe(NH4)2(SO4)2.6H2O + KMnO4 Reaction"

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Discussion Overview

The discussion revolves around determining the net ionic equation for the reaction between Fe(NH4)2(SO4)2.6H2O and KMnO4. Participants explore the conditions under which the reaction occurs, specifically addressing whether it takes place in an acidic or basic solution, and the products formed from the reduction of permanganate.

Discussion Character

  • Homework-related
  • Debate/contested
  • Technical explanation

Main Points Raised

  • One participant proposes a net ionic equation involving the reduction of permanganate to MnO2 and the oxidation of Fe2+ to Fe3+.
  • Another participant points out that MnO2 and Mn2+ are different products, suggesting a need for clarification.
  • A later reply mentions that the reduction products of permanganate can vary depending on pH, indicating that molar concentrations may need to be considered to determine the correct product.
  • One participant asserts that the reaction should occur in low pH, leading to the reduction of permanganate to Mn2+.
  • Another participant expresses confusion about redox reactions and seeks additional help.

Areas of Agreement / Disagreement

There is no consensus on the net ionic equation, as participants present differing views on the products of the reaction and the conditions under which they occur. The discussion remains unresolved regarding the correct form of the net ionic equation.

Contextual Notes

Participants discuss the influence of pH on the reduction of permanganate and the necessity of knowing molar concentrations to accurately determine the products. There are unresolved aspects regarding the balancing of redox reactions and the specific conditions of the reaction.

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Homework Statement


Give the net ionic equation for this reaction:

Fe(NH4)2(SO4)2.6H2O + KMnO4


Homework Equations



Reducing reaction is

4H+ + MnO4- + 3e ---> MnO2 + 2H2O

Oxidation

3Fe+2 ---> 3Fe+3 + 3e


The Attempt at a Solution



4H+ + MnO4- + 3Fe+2 ---> MnO2 + 2H2O + 3Fe+3

My question is is this a basic or acidic solution? I'm assuming acidic because ammonium with have a tendency to lose it's H+. Is this the net ionic equation or do I have to include more? Can someone confirm wether or not my answer is corrent
 
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sweet so it looks like My equation was correct.
 
No - MnO2 ad Mn2+ are two different things.

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Hmmmm. The website you provided me with says Permanganate can be reduced into MnO2, Mn2+, or MnO4(-2) depending on the pH. Does this mean I have to use my molar concentrations to figure out which one it is?
 
All these reactions are used in analytical chemistry, but the most popular is the use of permanganate in low pH solutions.

I don't remember titration methods that will not reduce permangante to Mn2+. This is the only way of being sure that the reaction can't proceed further and hence has known stoichiometry.

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Thank You. The reaction that shoyuld take place is then.

5Fe2+ + MnO4- + 8H+ → 5Fe3+ + Mn2+ + 4H2O
 
Correct.

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methods
 
I know I am going to sound like a complete moron but I am lost! In my high school they offer this chemistry class. They call it pre-college chemistry. Well i am more confused than britany spears on crack. I need help with redox reaction?
 

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