To make a saturated solution, 36 g of sodium chloride is dissolved in 100 g of water at 293 K. Find its concentration at this temperature.

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Weight of solute =36 gm Weight of solvent (water) =100 gm Weight of solution = 36+100=136 gm Concentration=weight of solute/weight of solution *100 Conc.=36/136 *100 =26.47 % Nacl = 26.5%
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Concentration is nothing but mass percantage , i.e. mass of solute/ mass of solution ( mass of solute + mass of solvent) So concentration of NaCl is 36/ (36+100) = 26.47 = 26.5
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Weight of solute Sodiim chloride = 36 gm Weight of water = 100 gm Total weight = 136 gm Concentratio = (36/136) x 100 = 26.5 %
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