What is the concentration of iron(III) ion in a solution made by taking 10.00 mL of a 0.300 M Fe3+ solution and diluting it to the mark in a 100.0 mL volumetric flask?
What is the concentration of iron(III) ion in a solution made by taking 4.00 mL of the dilute solution made in question 1 and adding 6.00 mL of water to it? You can assume the volumes will add exactly.
The source of the thiocyanate ion in this experiment may be from ammonium thiocyanate, potassium thiocyanate or sodium thiocyanate. Why can we use any of these compounds?