Question

A 10 mL sample of 1.5 M Potassium Phosphate is placed in a 100 mL volumetric flask and diluted to the mark. What is the Molar concentration of Potassium ions in this diluted solution?

Answer 1

1.5 M K3PO4. Diluted 10 to 100 so new concn is 1.5 x (10/100).

There are 3 K^+ in 1 molecule K3PO4; therefore, the (K^+) will be three times that.