What is colorimetry? Explain principle and working of colorimeter.
Answers
In physical and analytical chemistry, colorimetry or colourimetry is a technique "used to determine the concentration of colored compounds in solution." ... To use the colorimeter, different solutions must be made, including a control or reference of known concentration.
A colorimeter is a light-sensitive device used for measuring the transmittance and absorbance of light passing through a liquid sample. The device measures the intensity or concentration of the color that develops upon introducing a specific reagent into a solution.
Colorimetry can detect the smallest colour difference that the human eye cannot pick up. Under the action of chemical agents, samples develop a specific colour that shows the concentration of the substance being tested. Colorimetry can be used to find out the concentration of any coloured subsistent.
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