8 - Properties of Solutions

8 - Properties of Solutions - Properties of Solutions Its...

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Unformatted text preview: Properties of Solutions Its all about the interactions. What do you need in order to have a solution? A solvent and a solute. Whats the difference between a solvent and a solute? Theres more of the solvent than the solute. Why do we care so much about solutions? Reactions are easier to perform in fluids (liquids or gases) than in solids. Why? You can stir them! This makes it easy to mix the reactants together and keep a homogeneous distribution A+B C For this reaction to occur, you need to have A near B. It doesnt matter how much A & B you have if they cant find each other. B A A+B C If the sample is mixed thoroughly and constantly, the reaction can continue to occur until you run out of 1 or both of the reactants. Gases and liquids are fluids Liquids are usually easier to handle: There is no pressure to consider. There is no containment issue. The conditions are frequently more modest. Water is a liquid at room temperature. Water is a very common medium for reactions, especially biological reactions. What are the molecular implications of being a mixture? There are 2 (or more) molecules. Which means Consider a pure substance On a molecular level, what does a pure substance look like (regardless of whether it is a solid, liquid or gas. Consider a pure substance On a molecular level, what does a pure substance look like (regardless of whether it is a solid, liquid or gas....
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8 - Properties of Solutions - Properties of Solutions Its...

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