The amount of copper present in the supplied sample can be determined by the following way: Step 1. Prepare a standard solution of potassium dichromate and standardize the supplied thiosulphate solution in the usual manner. Step 2. Dilute the supplied sample to 250 mL in a volumetric flask and shake well (B). Take 25 mL of the previously diluted solution (B) with a pipette and deliver into a 250 mL…