How Is Titration Different From Colorimetry?

Color is key in both titration and colorimetry.
••• flasks image by Wolszczak from

Both titration and colorimetry commonly use color observations to determine the unknown quantity of a substance. However, the underlying mechanism causing the observed color is different for each laboratory method.


A substance of known concentration, an acid for example, is added to a substance of unknown concentration, a base for example, until an indicator undergoes a color change showing that the acid and base are present in a known proportion. By measuring the volume of acid added during the titration, the amount of base present can be calculated.


Different substances absorb specific wavelengths of light, leaving the complementary colors to be seen. As light passes through a substance of unknown concentration, the amount of light absorbed is proportional to the amount of substance present. So concentration can be calculated by the measured absorbency or the observed color intensity.


The color change observed during a titration indicates that the two substances involved have interacted in a particular way. The unknown quantity of one substance can be calculated from the known quantity of the other substance. The intensity of color observed during colorimetry indicates the amount of light absorbed by the given substance and by extension the amount of substance present.

Related Articles

How to Determine the Concentration of a Titration
How to Do Titration Calculations
How to Calculate End Point
Precipitation Titration Techniques
What Does Titration Mean?
Use of Titration
How to Use Log on a TI-83
Definition of Endpoint Titration
How to Calculate the K Value on a Titration Graph
Why Does Phenolphthalein Change Color?
How to Determine If Salts Are Acidic or Basic
How to Detect Potassium Nitrate
How to Use a Protractor to Measure a Triangle
Five Ways to See Chemical Reactions
How to Know When a Titration Is Complete
How to Neutralize an Acid
How to Find the Area of a Trapezoid Without the Length...
The Uses of Volumetric Analysis
How to Find the Height of a Prism
Types of Spectrometers

Dont Go!

We Have More Great Sciencing Articles!