# What is Normality ? ( Chemistry Online Guru )

today we will discuss about methods of concentration there are so many methods of concentration today we will discuss about

#### normality

## what

is#### normality

#### normality

is number of gram equivalent of solute present in one liter of solution it means number of gram equivalents of solute divided by volume of solution volume of solution is taken in liters we can calculate number of gram equivalents it's formula is weight of solute divided by equivalent weight#### normality

is represented by n so it's formula is n equal to W upon evie w is the weight of solute in grams e is the equivalent weight v is the volume of solution in liters unit of#### normality

is gram equivalent per liter how can we calculate equivalent weight equivalent weight of acid equivalent weight of acid is calculated by the formula molecular weight of acid divided by basicity of acid before calculating equivalent weight of acid it is necessary to know the basicity of acid number of replaceable H atom present in acid is equal to the basicity of acid for example it CL its basicity is 1 because in HCl 1 replaceable H atoms present basicity of h2so4 is 2 because 2 duplicable H atoms are present in h2 so4 basicity of h3po4 orthophosphoric acid is 3 because 3 replaceable h atoms are present now we calculate equivalent weight of HCl its molecular weight is 1 plus 35 point 5 divided by basicity that is 1 so equivalent weight of HCl is 36.5 similarly we can calculate equivalent weight of h2so4 its molecular weight is 2 into 1...plus 32 plus 16 into 4 divided by basically that is true so molecular we talk h2so4 is 98 when it is divided by 2 we get 49 now