Thursday
September 18, 2014

Homework Help: chemistry

Posted by amy on Tuesday, January 5, 2010 at 5:26pm.

So I posted this question yesterday and was told I had a few typos.... I fixed them and here is the question again... Please help me!!!

A solution of ferrous sulfate (FeSO4) is titrated with a solution of potassium permanganate in sulfuric acid. The balanced half reactions are as follows:

10FeSO4 + 5 H2SO4 --> 5 Fe2(SO4)3 + 10 H ^+ +10e^-
and 2 KMnO4 + 3 H2SO4 +10e^- --> 2 MnSO4 + K2SO4 + 8 H2O.

The gram-formula mass of FeSO4 is 151.91 g/mol, and that of KMnO4 is 158.04 g/mol.

1. What is the gram-equavalent mass of FeSo4 for this reaction?

2. What is the gram-equavalent mass of KMnO4 for this reaction?

3. If 5.35 g of KMnO4 are dissolved in
a liter of solution, what is the normality of the solution?

4. If 65.34 mL of 0.1000 N KMnO4 are required to titrate 45.28 mL of FeSO4 solution, what is the normality of the solution?

5. Carbon monoxide is detected in air samples by its reaction with diiodine pentoxide to form carbon dioxide and elemental iodine: CO + I2O5 --> CO2 + I2. Balance the equation.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chemistry - I posted a question at 5:43pm yesterday...can anyone please help ...
Bob Pursley - Bob: Thank you for answering my Chemistry question. I apologize ...
Chemistry - Posted for Rudy - Posted by Rudy on Sunday, January 26, 2014 at 7:...
science - My apology. I posted the previous question in correctly. Here is the ...
Computer Questions - I posted some computer questions and my answers on Saturday...
Calculus - MathMate Please help - I asked this question on last thursday and u ...
Dr.Bob can you check out the question down the pg - I posted a question ...
Spanish-Please check SraJMcGin - Hi, I redid some of the answers as suggested ...
Algebra II - Simplify: x^5*x^pi Answer: x^8.14 Is this correct? I know that this...
calorimetry - please, someone answer my question i posted already I answered ...

Search
Members