Page 6 - che142 solutions ebook

ENERGY CHANGES AND

SOLUTION FORMATION

STEP 3: FORMATION OF
SOLUTE-SOLVENT
INTERACTIONS

STEP 1: SEPARATION OF
SOLVENT MOLECULES

STEP 2: SEPARATION OF
SOLVENT MOLECULES

WHEN THE SOLUTE DISSOLVES IN THE SOLVENT, PARTICLES

OF THE SOLUTE DISPERSE THROUGHOUT THE SOLVENT

THE ENTHALPY CHANGE IN THE SOLUTION

PROCESS CAN BE DEFINED AS:

H SOLN = H 1 + H 2 + H 3

CAN EITHER BE POSITIVE

OR NEGATIVE DEPENDING

ON THE INTERMOLECULAR

FORCES

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