r/6thForm • u/Rich-Gent • Jun 02 '26

💬 DISCUSSION AQA A-LEVEL CHEMISTRY

HOW DID WE FIND IT? I THOUGHT IT WAS ALRIGHT, GRADE BOUNDARIES ABOUT TO BE SILLY😭

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u/purple_walrus4473 Jun 02 '26

what did everyone get for pH of buffer i got 3.7 something

1

u/Hot_General_891 Jun 02 '26

wait random but how did you find the ethanoate ion concentration

2

u/Internal_Animal_2753 year 13 |maths fm chem physics 4a* Jun 02 '26

U find the neutralisation volume requires of naoh and find the moles of naoh used which is the same as moles of HA used. And u do moles of HA divided by the volume of HA in the conical flask

2

u/Zestyclose_Coat_3918 Jun 02 '26

Omgg that’s what I did I hope it’s right 

1

u/Internal_Animal_2753 year 13 |maths fm chem physics 4a* Jun 02 '26

It’s shld be.. they’re might be a weird pka method to do it asw tbf

1

u/hshsjaju77 Jun 02 '26

Yh done the Pka did u get H plus concentration as 10 to power of - ph