COLORIMETRY

[aronno]

the amount of unreacted dichromate in in a test solution is ditermined by colorimetry.
Aqueous solutions containing the dichromate ion are ORANGE in color. The colorimeter available for analysis can be fitted with a orange light source or green. State which of these light sources you would use for this analysis and give an explaination, why?

thanks ppls

[khalil]

green cos it is complementart to orange. it will absorb green the most and hence give a orange colour