As level chemistry

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rrandy
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#1
Report Thread starter 6 months ago
#1
Hi, could someone please explain the titration method
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TriplexA
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#2
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#2
(Original post by rrandy)
Hi, could someone please explain the titration method
Hi there.

rinse equipment (burette with acid, pipette with alkali, conical flask with distilled water) •pipette 25 cm3 of alkali into conical flask
•touch surface of alkali with pipette ( to ensure correct amount is added) •adds acid solution from burette
•make sure the jet space in the burette is filled with acid
•add a few drops of indicator and refer to colour change at end point •phenolphthalein [pink (alkali) to colourless (acid): end point pink colour just disappears] [use if NaOH is used] •methyl orange [yellow (alkali) to red (acid): end point orange] [use if HCl is used] •use a white tile underneath the flask to help observe the colour change
•add acid to alkali whilst swirling the mixture and add acid drop wise at end point •note burette reading before and after addition of acid
•repeats titration until at least 2 concordant results are obtained- two readings within 0.1 of each other.


This is from a site called chem revise.
Hope it helps.
Last edited by TriplexA; 6 months ago
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rrandy
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#3
Report Thread starter 6 months ago
#3
(Original post by TriplexA)
Hi there.

rinse equipment (burette with acid, pipette with alkali, conical flask with distilled water) •pipette 25 cm3 of alkali into conical flask
•touch surface of alkali with pipette ( to ensure correct amount is added) •adds acid solution from burette
•make sure the jet space in the burette is filled with acid
•add a few drops of indicator and refer to colour change at end point •phenolphthalein [pink (alkali) to colourless (acid): end point pink colour just disappears] [use if NaOH is used] •methyl orange [yellow (alkali) to red (acid): end point orange] [use if HCl is used] •use a white tile underneath the flask to help observe the colour change
•add acid to alkali whilst swirling the mixture and add acid drop wise at end point •note burette reading before and after addition of acid
•repeats titration until at least 2 concordant results are obtained- two readings within 0.1 of each other.


This is from a site called chem revise.
Hope it helps.
Thank you so much!
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scimus63
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#4
Report 6 months ago
#4
try here. its a gcse site but method is basically the same

https://science-revision.co.uk/titrations.html
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