Not all soaps have exactly the same pH, however in general, they would have a pH higher than 7. A pH of 9 is possible.
4.6667
pH means -log10(H+concentration) so pH of a H+ concentration 3.6x10-9 is: pH = -log10(3.6x10-9) ≈ 8.4
solution with [OH-] = 2.5 x 10-9 , A solution with [H+] = 1.2 x 10-4, A solution with pH = 4.5
take the negative logarithm ex. 10^-4 has a pH of 4
-log[1 X 10^-4 M OH(-)] = 4 14 - 4 = 10 pH ----------------
9
9
"Soap" is not a single thing, there are lots of different kinds of soap. That said, if you told me that a particular soap had a pH of 9 I'd be a lot more inclined to believe you had some idea of what you were talking about than if you said it had a pH of 4.
9
I would expect the pH of a solution of soap to be closer to 9, as soap is typically basic in nature due to the presence of alkaline components like sodium hydroxide or potassium hydroxide in its composition. A pH of 4 would be more acidic, which is not characteristic of soap.
The pH of dish soap typically ranges from 9 to 10, making it slightly alkaline.
True soap (fats reacted with lye) is slightly alkaline. A pH of 4 is acid, a pH of 9 is alkaline. You can probably figure it out now. However many "soaps" on the market are really detergents, which tend to be closer to neutral (pH 7).
The pH of Ivory Soap is around 9-10, making it slightly basic.
The pH level of sulfur soap can vary, but it is typically around 9-10.
The pH of soap powder can vary depending on the brand and ingredients used. Generally, soap powder has a pH ranging from 9 to 11, making it slightly alkaline.
the pH level in Lysol hand soap is 5.8the pH level in Equate hand soap is 6.9the pH level in Dial hand soap is 6.1the pH level in Soft Soap hand soap is 6.7
well i don't know it might be pH 10