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A little help? I'm taking general chem for the first time
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Topic: A little help? I'm taking general chem for the first time (Read 3689 times)
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biomajor13
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A little help? I'm taking general chem for the first time
«
on:
June 17, 2010, 05:46:53 PM »
1)A 25.00 mL of HCl solution was titrated to the phenolphthalein end point. If 23.85 mL of 0.0991 M NaOH was used, what was the molarity of HCl solution?
2)An acid base titration is performed but some base that splashed onto the sides of the flask is not rinsed down prior to the endpoint measurement. Will the calculated molarity of the acid be erroneously high or low? Explain
If anyone can help me I'd greatly appreciate it.
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Borek
Mr. pH
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I am known to be occasionally wrong.
Re: A little help? I'm taking general chem for the first time
«
Reply #1 on:
June 17, 2010, 06:23:28 PM »
Please read
forum rules
.
You have to show your attempts at solving the question to receive help. This is a forum policy.
http://www.titrations.info/titration-calculation
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ChemBuddy
chemical calculators - stoichiometry, pH, concentration, buffer preparation,
titrations.info
opti384
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Re: A little help? I'm taking general chem for the first time
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Reply #2 on:
June 18, 2010, 08:56:28 AM »
In an acid-base titration, same amount of moles (in H
2
SO
4
, the mole of the H
+
should be twice, since 2 hydronium ions can be dissolved) of H
+
and OH
-
react.
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A little help? I'm taking general chem for the first time