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November 01, 2025, 12:11:02 pm
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Author Topic: Concordancy of titres  (Read 4203 times)  Share 

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RobM8

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Concordancy of titres
« on: May 29, 2011, 09:23:44 pm »
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In VCE are concordant titres within a certain range from each other (ie. 0.1 mL difference) or are they simply the three closest titres?

The Heinemann textbook used a 0.1 mL range in their examples whereas a trial exam I have done used the three closest ones where the largest difference two of the titres was 0.23 mL.

So, for the exam how should we be dealing with concordancy?
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cohen

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Re: Concordancy of titres
« Reply #1 on: May 29, 2011, 09:27:07 pm »
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According to TSFX, they should be in a 0.1mL range.
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pi

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Re: Concordancy of titres
« Reply #2 on: May 29, 2011, 09:28:25 pm »
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Quote from: cohen on May 29, 2011, 09:27:07 pm
According to TSFX, they should be in a 0.1mL range.

+1, from highest to lowest. Backed up by my chem teacher too.
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Greatness

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Re: Concordancy of titres
« Reply #3 on: May 29, 2011, 09:29:09 pm »
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When you want concordant results, you get the 3 that are within 0.10ml of each other.

What company exam was that?
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RobM8

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Re: Concordancy of titres
« Reply #4 on: May 29, 2011, 09:36:53 pm »
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Insight
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Water

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Re: Concordancy of titres
« Reply #5 on: May 29, 2011, 09:38:19 pm »
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Quote from: pi on May 29, 2011, 09:28:25 pm
Quote from: cohen on May 29, 2011, 09:27:07 pm
According to TSFX, they should be in a 0.1mL range.

+1, from highest to lowest. Backed up by my chem teacher too.

My Chem teacher too.

Moderator action: removed real name, sorry for the inconvenience
« Last Edit: January 15, 2017, 06:03:57 pm by pi »
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jane1234

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Re: Concordancy of titres
« Reply #6 on: May 29, 2011, 10:27:21 pm »
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Quote from: cohen on May 29, 2011, 09:27:07 pm
According to TSFX, they should be in a 0.1mL range.
According to TSFX, they should be in a 0.05mL range.

EDIT: Hahaha wow that's what I meant +-0.05mL... can only blame this on 9 hour chemistry overload :D
« Last Edit: May 29, 2011, 10:40:05 pm by jane1234 »
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tony3272

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Re: Concordancy of titres
« Reply #7 on: May 29, 2011, 10:33:51 pm »
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Quote from: jane1234 on May 29, 2011, 10:27:21 pm
Quote from: cohen on May 29, 2011, 09:27:07 pm
According to TSFX, they should be in a 0.1mL range.
According to TSFX, they should be in a 0.05mL range.

Well, at least that's what they said today...
They should probably get their facts straight...  :idiot2:
They says its a +/- 0.05ml range. the 1ml means from the highest titre to the lowest titre, as long as they are both within .05 ml of the middle one. so you can have 17.05ml, 17.10ml and 17.15ml as titres although the highest and lowest are not within 0.05ml of eachother
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luken93

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Re: Concordancy of titres
« Reply #8 on: May 29, 2011, 10:43:04 pm »
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So what happens if each are 0.11ml from the next? Which (if any) do you take?
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lilmamba17

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Re: Concordancy of titres
« Reply #9 on: May 29, 2011, 10:48:16 pm »
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Well i'd say if they give you 4 or 5 titres take 3 of the closest ones and get the average
because you have to have minimum of 3 to have a concordant titre
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cohen

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Re: Concordancy of titres
« Reply #10 on: May 29, 2011, 11:10:53 pm »
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If its even 0.01mL over the concordant titration range, you have to do another titration. (Well, it's what my teacher made my group do when we were 0.02mL out of the concordant titration range)
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