Australia's Science Forum

I am sure someone has put a list of what solutions have pH 3-14 somewhere on this site but I can't seem to find it (can't search for pH because it's not a long enough word... but I have done some browsing). Can anyone tell me what would be a good solution for pH 8 or 9 and pH 5?
Rosalie

The list in the"manual for school assistants" is Lemons pH 1.7
Oranges 3.5
Beer 4.5
Lemonade 3.8
Fresh milk 6.0
Water 7.0
Eggs 7.5
Toothpaste 9.0
Bleach 11.5
Oven cleaner 12.5
Hope this helps. Tracey

I have a list which claims 0.1M H₃BO₃ has a pH of 5.2, 0.1M NaHCO₃ has a pH of 8.4 and 0.05M Na₂B₄O₇ has a pH of 9.2.

I have another list of standard pH solutions produced by adding together various volumes of 0.1M citric acid and 0.2M disodium hydrogen phosphate.
To make a pH5 solution, add 48mL of the citric acid to 52mL of the sodium phosphate.
To make a pH8 solution, add 3mL of the citric acid to 97mL of the sodium phosphate.
Is this what you're after?

Carol

That's great - thanks!!

RosaliM I think this may be what you where referring to