what is the osmolarity of 0.50 M Na3PO4?

Question

what is the osmolarity of 0.50 M Na3PO4?

Answer 1

Hello Amirah,

To find the osmolarity, you have to multiply the molarity by the number of osmoles a solute makes. Here, Na3PO4 makes 4 osmoles when dissolved: 3 Na⁺ and 1 PO4^3-. Thus, 4 x 0.5 = 2 Osmol/L