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Topic: somebody plzz help me : titration calculations  (Read 2756 times)

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Offline Nasbah bm

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somebody plzz help me : titration calculations
« on: December 09, 2014, 01:47:01 PM »
i have a question.
how to determine percentage oxidation of a sample of partially oxidized FeSO4.7H2O, provided 0.02 KMnO4?
« Last Edit: December 09, 2014, 02:19:23 PM by Nasbah bm »

Offline Borek

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Re: somebody plzz help me : titration calculations
« Reply #1 on: December 09, 2014, 03:19:26 PM »
You have to show your attempts at solving the question to receive help. This is a forum policy.

It would also not hurt to list the problem with all data you have and with the information about procedure. As of now there is not enough information to help you without making guesses about what what it is all about.

Definitely start with the reaction equation.
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline Nasbah bm

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Re: somebody plzz help me : titration calculations
« Reply #2 on: December 09, 2014, 04:39:22 PM »
firstly thanks for replying
KMnO4 Molarity is .02 and of FeSO4 is 0.1
volum of both = 10 ml

2KMnO4+8H2SO4+10FeSO4.7H2O==K2SO4+2MnSO4+5Fe2(SO4)3+78H2O

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

so fe+2 is oxidized to fe+3
after that I have no clue
should I be comparing masses of iron in reactant and product?? and get %???
« Last Edit: December 09, 2014, 05:13:37 PM by Nasbah bm »

Offline Dan

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Re: somebody plzz help me : titration calculations
« Reply #3 on: December 09, 2014, 04:45:17 PM »
Your English and formatting are atrocious.

Write properly, capitalise your elemental symbols correctly and use subscript/superscript.

e.g. KMnO4- not kmno4-

These are Forum Rules, which you agreed to follow before posting.
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Offline Nasbah bm

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Re: somebody plzz help me : titration calculations
« Reply #4 on: December 09, 2014, 05:04:56 PM »
Sir you are right but I am unable to write my question in that formte but however i will try to follow this formte, to which i agreed to follow before posting
« Last Edit: December 09, 2014, 05:56:49 PM by Nasbah bm »

Offline Borek

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ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline Nasbah bm

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Re: somebody plzz help me : titration calculations
« Reply #6 on: December 09, 2014, 10:05:41 PM »
thanks Chembuddy that was really helpful!

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