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SOLUTION FORMATION

SOLUTION FORMATION. Two parts to a solution (soln): solute – dissolving particle solvent – dissolving medium miscible – liquids dissolve in one another immiscible – liquids that are insoluble in one another. SOLUTION FORMATION. How fast will a soluble substance dissolve? depends on:

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SOLUTION FORMATION

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  1. SOLUTION FORMATION Two parts to a solution (soln): solute – dissolving particle solvent – dissolving medium miscible – liquids dissolve in one another immiscible – liquids that are insoluble in one another

  2. SOLUTION FORMATION How fast will a soluble substance dissolve? depends on: Agitation Temperature Particle Size

  3. AGITATION • solute dissolves more rapidly • brings fresh solvent in contact with surface of solute • affects RATE of dissolving, NOT AMOUNT of solute that dissolves

  4. TEMPERATURE • kinetic E of solvent is higher at higher temperature • increased FREQUENCY and FORCE of collisions of water molecules with surface of crystal

  5. PARTICLE SIZE • powder dissolves more rapidly than a crystal • greater surface area in powder – more exposed to colliding water molecules

  6. SOLVATION • interaction between dissolving particles and solvent • ex: NaCl in H2O

  7. SATURATED SOLUTION contains maximum amount of solute for a given amount of solvent at constant pressure dynamic equilibrium exists betw. solvation and de-solvation

  8. UNSATURATED SOLUTION • contains less solute than the maximum amount

  9. MOLARITY • defines concentration • amount of solute dissolved in a given quantity of solvent • Molarity (M) = moles solute Liters of solution

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