If 10 ml of a 9 g/L stock solution of ferric chloride are added to a Hach container that has 5 L of water, what will be the concentration of ferric chloride in the water?
The new concentration will be 18 mg/L.
We can use the dilution equation to solve this problem.
#color(blue)(bar(ul(|color(white)(a/a) c_1V_1 = c_2V_2color(white)(a/a)|)))" "#
We can rearrange this formula to get
#c_2 = c_1 × V_1/V_2#
In this problem,