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Topic: Finding the moles...  (Read 4603 times)

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Offline ILoveISO

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Finding the moles...
« on: January 31, 2010, 01:02:29 AM »
1. Calculate the number of moles of sodium carbonate present in the original 25.00ML aliquot of carbonate solution

--> How do I do this? I started with 1.16grams of sodium carbonate, if I divided it by the molar mass and got the moles and multiplied that by 0.02500L and got the molarity would that even be useful? Not sure what to do??

2. Calculate the moles of sulfuric acid that remained in the solution after reaction with the carbonate

What do I need to do for this? Not sure how to start

Offline Schrödinger

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Re: Finding the moles...
« Reply #1 on: January 31, 2010, 04:25:36 AM »
1. Calculate the number of moles of sodium carbonate present in the original 25.00ML aliquot of carbonate solution

2. Calculate the moles of sulfuric acid that remained in the solution after reaction with the carbonate

I guess these questions are incomplete. Can you please type out the entire question?
I don't mean to be mean, but these questions make no sense as such

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Offline ILoveISO

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Re: Finding the moles...
« Reply #2 on: January 31, 2010, 08:13:25 PM »
These are the entire questions... first question is number 8 and the questions before that have nothing to do with it cause I was just looking for moles of sodium hydroxide which was a separate titration, this is Part B. Where I am using sodium carbonate in a unknown sample

The second Q is number 10, the question before that says give the balanced equation of sulfuric acid with sodium carbonate

H2SO4 + Na2CO3 --> Na2SO4 + H2O + CO2

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