ECB Project assignment: Data & questions

For the ECB project, you are required to use Visual MINTEQ freeware for aqueous speciation.
For the project use the following concentration of species:

Ionic strength= 0.05 M

Fe(III) = 20 ppm
Fe(II) = 20 ppm
Cd(IV) = 15 ppm
Hg = 5 ppm
Cr(IV) = 10 ppm
As(IV) = 10 ppm
Carbonate = 25 ppm
Bicarbonate = 15 ppm
Sulfate = 12 ppm
silicate = 15 ppm
chloride = 35ppm

For your specific heavy metal:

1) List the major species (of your specific metal) at each pH level (pH =1 to 14). Major species is defined as something with >10% concentration.
2) Draw the pC-pH diagram of your particular species.