pH is the degree of acidity or basicity of a chemical substance in aqueous systems.
In simple terms pH is the power of hydrogen ion or hydronium ion concentration.
In simple terms pH is the power of hydrogen ion or hydronium ion concentration.
It can be calculated by :
pH = - log10[H+] or
pH = - log10[H+] or
pH = - log10[H3O+]
[ ] square bracket represents the concentration in mol/dm3
Example: If a sample of an acid is found to have[ H+]=1X10-4
Than pH = - log10[1X10-4]
pH = -[-4 log 10]
pH= 4
If you want to find out [ H+] than you can use the following formula: pH = 10-pH
If you want to find out [ H+] than you can use the following formula: pH = 10-pH
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