How to Calculate the Normality of HCL

How to Calculate the Normality of HCL
••• lucadp/iStock/GettyImages

Normality of a solution determines the concentration of solutes in the solution. It is expressed as number of equivalents per litre. (Normality = gram equivalents/ litres solution). The easiest way to find normality is from molarity. All you need to know are how many moles of ions dissociate. Normality can also be calculated by multiplying molarity with gram equivalent Normality (N) = Molarity(M) x Equivalent (N/M).

    First, determine the equivalent of HCl. An equivalent is the number of moles of hydrogen ions one molecule of an acid will donate or one mole of base will accept.

    Equivalent of HCl= 1 (as each molecule of HCl will donate only one mole of hydrogen ion)

    For example, let's consider 2M solution of HCl.

    Gram equivalent of HCl is 1 Normality (N) = Molarity(M) x Equivalent(N/M) Normality = 2 x 1= 2N

    For all solutions which have gram equivalent value of 1, the normality of the solution is always equal to the molarity of the solution.

    Tips

    • Normality is not an appropriate unit of concentration in all situations. It requires a defined equivalence factor and is not a set value for a chemical solution. The value of normality can change according to the chemical reaction under examination.

Related Articles

Examples of Acidic Buffers
Use of Sulfuric Acid & Phosphoric Acid in Titration
How to Calculate Equivalent Units
How to Calculate Moles
How to Find Out If an Element Is an Ion
What Is Molarity & How Is It Calculated?
How to Calculate the Percent Ionization
How to Calculate Percent Dissociation
How to Make an Ascorbic Acid Solution
How to Convert AMU to Mole
How to Calculate the Normality of NaOH
Are Ions Hydrophobic Or Hydrophilic?
How to Convert Meter to Liter
How to Calculate Solubilities
How to Test for Acidity With Litmus Paper
How to Calculate Melting & Boiling Points Using Molality
How to Calculate End Point
How to Calculate Particle Concentration
What Is an Alkaline Solution?

Dont Go!

We Have More Great Sciencing Articles!