A pH of seven is neutral.
Acidic
-log(10^-4 M) = 4 14 - 4 = 10 pH
pH 9 - pH 4 = pH 5 It is stronger by 5 pH.
PH is equal to -log[ hydrogen ion]. You always have to use the concentration of the hydrogen ions. The concentration has to be in Molarity (moles per liter). If your concentration was actually 10 moles per liter, your PH would be -1. If it was 8 moles per liter, it would have a PH of -.903. The PH can actually go below 0 if you are using a strong acid in a very high concentration, but that would be dangerous.
It would be an acid since it is less then 7. Also, it is typically a weak acid since is it near a pH of 7 which is a neutral solution.acid
A pH of seven is neutral.
pH 4 = acid pH 12= base
A pH that is less than 7 is an acid, so 4 pH would be an acid.
there is no logical reason to believe that "acetylsalicyclic acid" would have a pH of 15...this would be a base.
Acidic
-log(10^-4 M) = 4 14 - 4 = 10 pH
It is acutally pH. We use pH to see how many [H+] ions there are in a solution. Blood commonly has a pH of about 7.5-7.6 according to the person.
4 if its a base 1 if its an acid
3/4-6
The pH scale is from 1-14 Strong acids are 1-4
Lemonade is acidic and would have a pH in the 4.0 - 6.5 range.