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Barbed Lungs Offline
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Name: Nicola
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Chemistry - Titration question? - February 1st 2010, 03:17 PM

I'm struggling with this question and wondered if I have worked it out correctly.

Question: Representing the unknown acis as HA, the equation for the reaction with sodium hydroxide is shown below

HA + NaOH ---> NaA + H2O

Use the average titre to calculate the the concentration in mol dm-3 of the diluted acid.

Volume NaOH = 25.05cm cubed
Concentration NaOH = 0.1 M
Volume HA = 25cm cubed.

My calculations are, 0.02505 x 0.1 = 0.002505 mol
0.002505/0.025 = 0.100 mol dm-3

Is this correct?

Also, to determine the concentration of the original acid do you just times the answer to the first question by ten?

Any help at all is appreciated x


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