Help with acids & bases on the pH scale. Please help me?!?

Question

Where is Isopropyl alcohol on the pH scale??(base)
Which one is close to a base on the pH scale?
Water, saline solution, pepto-bismol & alka-seltzer && whatever one is closer which what is the pH number?

Also on the pH scale where is Hydrogen peroxide (acid)??



I just need the number so I know where to put it thank you guys.

Answer 1

Isopropanol is pretty benign, pH wise, and is only slightly basic, perhaps a pH of 8.5 or 9, depending on concentration. Same with pepto-bismol -- it's meant to gently neutralize stomach acid, not explode on contact -- so it's probably about the same. Peroxide is slightly acidic, but mostly the physical hazard is due to its ability as an oxidizer, so it's pH is probably no less than about 5. So really, none of the chemicals you've listed need to be stored in acid/base cabinets, but your isopropanol should be stored in a flammable cabinet and your peroxide in an oxidizer cabinet away from reducing agents. Pepto and alka-seltzer are sold over-the counter for a reason -- they're considered safe for consumers to take home and put wherever they feel like.

Answer 2

Isopropyl alcohol should be close to neutral (7) on the pH scale. It has no compounds which are a congutive acid or base.
On the pH scale 7-14 is basic, with 14 being more basic.
Water = 7, Saline solution = 7, pepto-bismol = 10 alka-seltzer = 10.
Hydrogen peroxide = 7 (it is corrosive not acidic)