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Solutions VI
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Solutions of solids in liquids

Shaillee Kaushal is teaching live on Unacademy Plus

Shaillee Kaushal
Faculty in Chemistry with a teaching experience of 14 years. Specialised in teaching for boards and competitions.

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  1. XII 02 . Solutions - VI


  2. Solution of solids in Liquids: In such solution the solid is taken as the solute and the liquid is the solvent. A solution is whch the amount of solute is less is referred to as unsaturated solution >When the solute is added to the solvent with vigrous stirring of the solvent after each addition, a stage is reached when no more of the solute dissolves in the solution. Such solutions are called saturated solutions.A solution which remains in contact with undissolved solute is termed as saturated. The amount of solute dissolved in 100 g of a solvent to form a saturated solution at a given temperature is termed solubility. >When a solid is added to a solvent the particles from the solid diffuse into it. The solute and solvent particles move constantly in solution phase. Some of the particles of the solue return to the solid state due to collisions.Thus two opposite processes operate simultaneously


  3. Factors influencing solubility of a solute in a liquid: Nature of solute Nature of Solvent Temperature 200 190 180 170 160 150 140 130 C 120 8 110 KBc 100 90 80 70 60 50 40 30 NHAC K2SO4 20SS 10 0 O 10 20 30 40 50 60 70 80 90 10O Temperature in degree celsius


  4. Determination o solubility mass of the dish +solution -wig Mass of solution = (wi-w) Mass of the dish + residue =W28 Mass of residue = (w2-w) = xg Mass of the solvent- Mass of solution-mass of residue Solubilityx 100 mass of residue mass of solvent x 100