Osmolarity (Osm) is the molar concentration of the particles-molecules and/or ions-in a solution. In physiological solutions, 5 \% ({\rm m/v}) glucose ({\rm C}_{6}{\rm H}_{12}{\rm O}_{6}) and 0.9 \% ({\rm m/v}) {\rm NaCl}, the osmolarity must be the same as for the blood, which is 0.3 {\rm Osm}

Question

1.Calculate the osmolarity of glucose in the solution.
2.Calculate the osmolarity of {\rm NaCl} in the solution.

Answer 1

Are these two solutions?
5% glucose is 50g/L = 50/180/L = 0.277 Osmolar.
0.9% NaCl is 9 g/L = 9/58.5/L = 0.15 and that times 2 = 0.308 Osmolar.

Answer 2

Thank you