Colorimetry Questions

How would you work out the filter colour for colorimetry?

To work out the filter colour for colorimetry, you would look at the opposite side of the colour wheel from the colour of the compound.

What is the purpose of standardisation of a solution?

The purpose of standardisation of a solution is to determine the accurate concentration of the solution

How do you prepare a standard solution?

To prepare a standard solution, accurately weigh solid, dissolve in minimum water, transfer with rinsings to standard flask, make up to graduation mark, invert to mix.

In relation to colorimetry what is a calibration curve?

A calibration curve is a graph showing the relationship between the concentration of a substance and its absorbance of coloured light

During colorimetry how is a calibration graph prepared?

During colorimetry, a calibration graph is prepared by:

• Measuring the absorbance of a range of standard solutions

• Then a graph plotted of absorbance against concentration.