Question

In a 0.25 M aquous solution of sodium phosphate What is the total concentration of all ions?

Answer 1

Molarity = no. of moles of solute / volume of solution in L

So let us assume the volume of solution be 1 L

Then the number of moles of sodium phosphate in the solution will be 0.25 mol

One mole of Na3PO4 has 4 ions

So 0.25 mol of it will have : 0.25 x 4 = 1.00 mol of ions

Then the molarity of ions = 1.00 /1

= 1 M