you add 10 g NaCl to 1 L of water, and 20 g of glucose to a separate L of water. Which has a higher osmolarity?

Question

you add 10 g NaCl to 1 L of water, and 20 g of glucose to a separate L of water. 

Answer 1

 

 

The osmolarity is the concentration of moles of solute per liters of solution and is proportional to the number of particles in solution.

 

M as molarity is equal to n/ V  as mol/L

 

mNaCL= 10 g    V= 1L 

 

n= m/M ( M as molecular weight ) 

 

M NaCL= ? ( you do the calculation) 

 

After you find the value for n and same for the glucose then calculate the molarity for both, remember, M= n/V

 

Based on the  results you can establish which one has higher osmolarity considering that this is proportional to the number of particles in solution.