About Titration Molarity or Normality :
Titration: It is a process of chemical analysis in which the qty. of some constituent of a sample is determined by adding to the measured sample an accurately known quantity of another substance with which the desired constituent reacts in a definite, known proportion.
It’s also known as “volumetric analysis” and “titrimetry.”
In response to a chemical change, a substance changes color. The colour of an acid–base indicator (such as phenolphthalein) changes with the pH variation. At the start of the titration, a 1-2 drop of indicator solution is introduced in the solution; the endpoint is reached when the colour changes.
Indicator | Acidic side Color | Range of color change (pH) | Basic side Color |
Methyl violet | Yellow | 0.0–1.6 | Violet |
Bromophenol blue | Yellow | 3.0–4.6 | Blue |
Methyl orange | Red | 3.1–4.4 | Yellow |
Methyl red | Red | 4.4–6.3 | Yellow |
Litmus | Red | 5.0-8.0 | Blue |
Bromothymol blue | Yellow | 6.0–7.6 | Blue |
Phenolphthalein | Colorless | 8.3–10.0 | Pink |
Alizarin yellow | Yellow | 10.1–12.0 | Red |
Normality | Molarity |
Equivalent concentration is another name for it. | Also known as molar concentration. |
It is defined as the number of gram (g) equivalent per 1.0 litre of solution. | It is defined as the number of moles (mol.) per 1.0 litre of solution. |
It’s used to calculate the gramme equivalent in relation to the solution’s total volume. | It is used in measuring the ratio between the number of moles in the total volume of the solution. |
Units : N or eq L-1 | Unit: M or Moles L-1 |
Point | Molarity (M) | Molality (m) |
Measure of | Concentration | Concentration |
Definition | The moles of a solute per solution (in liters) | The moles of a solute per solvent (in Kilograms) |
Units | M | m |
Equation | M = moles solute / liters solution | m = moles solute / kg solvent |
Ratio of moles to: | Volume (in liters) | Mass (in kilograms) |
Specific gravity: The specific gravity is the ratio between the density of an object or desired substance, and a reference standard substance.
RD = ρ Substance ÷ ρ Reference
Read More:
0.1 N HCl Preparation and Standardization
Have any Query: Click Here
Contact Us: Click Here
This website uses cookies.