titration calculations are a killer..

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Hi everyone, I'm sitting unit 3 AQA chemistry on wednesday but I really don't understand how to do titration calculations! can anyone help? is there an easy way to remember it?

Thank you :) x

Posted: 21-05-11 11:52 by Kelly:)

Right, I will try and explain them but I don't know if it will help.

The main thing you need for these is the triangle :      no. of moles

                                                                     concentration |  volume

1. Use the triangle to find the no. of moles of the alkali

2. use the equation to find the ratio of acid:alkali. This will tell you how many moles of alcohol there are e.g. if the ratio is 1:1 they will have the same number of moles.

3. Use the triangle to find the equation of the acid and you're all done :-)

Remember if the volume is in cm3 then you need to divide it by 1000 to put it into dm3

Hope that helps ***

Posted: 22-05-11 14:50 by AnnaLouise

oh that really does! thank you!:) ***

Posted: 22-05-11 15:10 by Kelly:)

What exam is it you are doing? **

Posted: 22-05-11 15:19 by AnnaLouise

AQA C3 on Wednesday, how about you?**

Posted: 22-05-11 19:14 by Kelly:)

I'm doing this exam Wednesday! The CGP book really helps. http://getrevising.co.uk/resources/aqa_chemistry_unit_c3_higher_tier_revision_notes

That is amazing if you don't have CGP :)

Posted: 22-05-11 20:24 by emilyanne

yeah I know,

Posted: 22-05-11 21:06 by Kelly:)

I've already got them!:p good luck :)

Posted: 22-05-11 21:07 by Kelly:)

oh haha well it explains titrations well. you too! :)

Posted: 22-05-11 21:21 by emilyanne

Learn the formula triangle for g/dm3 as well as the formula triangle for mol/dm3!

Posted: 23-05-11 09:10 by M

Is that A-Level?

I am doing OCR salters unit 2 on friday which is AS :-) x

Posted: 23-05-11 13:29 by AnnaLouise

yeah it's not in any of the practice papers I've done so ya know! ooh a-level! good luck :) x x

Posted: 23-05-11 15:59 by Kelly:)