CHEM 140 Chapter Notes - Chapter 9: Osmosis, Molar Concentration, Volume Fraction
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30 Apr 2017
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A solution is a homogeneous mixture where the solute is uniformly distributed in a substance called the solvent. Particles of the solute are evenly dispersed among the molecules of the solvent. The solution that forms is in the same physical state as the solvent. Water is known as the universal solvent and is very common in nature. O-h bond is very polar, water is a polar solvent because the o atom has a partial negative charge and the h atom has a partial negative change. Hydrogen bonds occur between molecules where partially positive hydrogen atoms are attracted to partially negative atoms. Interactions between solute and solvent determine whether a solution will form. Energy is needed to separate solute and solvent particles. Energy is released as solute particles move in the solvent to form a solution. Attraction accounts for the first separation and this will occur when solute and solvent have similar polarities- like dissolves like.
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