Concentration Of Sodium Chloride And Water At 293 K

To make a saturated solution, 36 g

of sodium chloride is dissolved in 100 g of water at 293K. Find its concentration at this temperature. 

Answer:  

Concentration of a solution (mass %) 

=mass of solute × 100 / mass of solution.

mass of solute (NaCl) = 36g

mass of solvent (Water) = 100g

mass of solution = 

mass of solute + mass of solvent 

= 100 + 36 = 136g

mass by % concentration 

= 36 × 100 / 136 = 26.47%