The molarity of a 2% solution of NaCl is 340 mmol/L. The molecular weight of NaCl is 58.5. What is the osmolarity of a 2% solution of NaCl?

Question

Quizplus · Accepted Answer

Osmolarity is calculated by multiplying the molarity by the number of particles the solute dissociates into. NaCl dissociates into two ions (Na+ and Cl-), so the osmolarity is 2 times the molarity: 2 * 340 mmol/L = 680 mOsm/L.

The Molarity of a 2% Solution of NaCl Is 340