PH Value -an overview

pH(Potential of Hydrogen)

- pH is a measure of hydrogen ion concentration. It expresses whether the solution is acidic, basic or neutral in nature. 

-pH scale usually ranges from 0 to 14.

-Those aqueous solution whose pH is less than 7 then it will be acidic in nature.

-Those solution whose pH is equal to 7 then solution will be neutral.

-If pH is greater than 7 then solution will be basic or alkaline in nature.

                                  ph values
1.Hcl acid                 0.0
2.Lemon juice         2.0
3.Vinegar                 2.2
4.Wine                      4.0
5.Pure water            7.0
6.Maleic acid            3.5
7.Sea water              7.5-8.4

-No pH values for vegetables oils, gasoline or pure alcohol.

-pH is used in everyday life as well as Science and Industry.

   Ph equation is - 

                                    pH =-log[H+]

Que-What is the pH of 10^-8 N HCl?

Ans-The pH of 10^-8N HCL can be calculated by the following steps -

[H+]=10^-8N

If the solution is dilute then water will dissociate to produce H+ ions

H20—[H+] + OH-

The concentration of H+ released from water is 10^-8and pH of water is 7

H+=10^-7+10^-8

H+ = 10^-7(1+0.1)

H+ =1.1×10^-7

I am suggesting you a quick revision book of science for 10 class board students 

We know that

pH = -log H+

Hence pH =6.95

--Boron based Carborane has pH value of -18.carborane is incredibly willing to donate a electron to others substances. Carborane acid are non-corrosive in nature so they may be handled with bare skin.