Concentration Of Sodium Chloride And Water At 293 K

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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%

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