Question

Given that liquid alum is used as a coagulant. Specific gravity of alum is 1.33. One gallon of alum weighs 11.09 lb and contains 5.34 lb of dry alum. Determine: (a) the alum concentration, (b) mL of liquid alum required to prepare a 100 mL solution of 20,000 mg/L alum concentration, (c) the dosage concentration of 1 mL of stock solution in a 2000 mL Gator jar sample.

Answer 1

First the volume of solvent and mass of alum is to be calculated to find the concentration of Alum sample.

Then we assume x ml of the alum solution is added to some solvent to get 100 ml of solution while calculating it we get the volume of alum solution required to be added.

Concentration of gator solution is calculated by total mass of alum in solution and dividing it by total volume.

Please rate positive.