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0.003M HCl
9M HNO3
7M CH3COOHethanoic acidor acetic acid
5% ethanoic acid
(vinegar)
Use ‘dilute’ or ‘concentrated’ and ‘weak’ or ‘strong’to describe the acids above.
Kw = [H+] [OH-] = 10-14
[H+] for pure water is 1 X 10-7
Kw = [10-7] [10-7] = 10-14
pH is -log [H+]
So the pH of pure water is 7
Mohr burette
Remember to:
Remove bubbles from the
valve area
Record data as you titrate
including uncertainties
What is the second
burette for?
Flush your burette with
distilled water when finished