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UT Dallas CHEM 1312 - Properties of Solutions

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CHEM 1312 1st Edition Lecture 1Outline of Last Lecture I. Discuss and review course syllabus and outlineOutline of Current Lecture I. Understanding physical properties of solutionsII. Recognizing the seven different types of solutionsIII. Classifying solutions according to solubilityIV. Brief introduction to solution concentration units (Molarity and Molality)Current LectureA solution is defined to be a homogenous mixture of two or more substances. These substancesare either classified as a solute or solvent.- Solvent – a substance that dissolves other substances; ex. water (H2O)- Solute – the substance being dissolved; ex. table salt (NaCl)Solvation is the process of a solute being dissolved in a solvent. During this process the solute particles are dispersed from one another and uniformly throughout the solvent. As the solvent particles surround the solute particles, solvation occurs.3 types of intermolecular interactions determine the level of solubility:I. Solute-solute interactionsII. Solvent-solvent interactionsIII. Solute-solvent interactionsSeven types of solutions:- Gas solution components (any solution that contains a gas solvent)I. Gas solute & gas solvent- Liquid solution components (any solution that contains a liquid solvent)II. Gas solute & liquid solventIII. Liquid solute & liquid solventIV. Solid solute & liquid solventThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- Solid solution components (any solution that contains a solid solvent)V. Gas solute & solid solventVI. Liquid solute & solid solventVII. Solid solute & solid solventSolutions are also categorized by the amount of solute that has been dissolved. Solution solubility is dependent upon two properties: solvent and its properties, and temperature of the solutionSolution Solubility- Saturated solution –solution that contains the maximum amount of a solute that the solvent is capable of dissolving- Unsaturated solution – solution that contains less solute than the solvent’s dissolving capacity- Supersaturated solution – solution that contain more solute than the solvent’s dissolvingcapacityIt is critical to keep in mind that supersaturated solutions are generally unstable and that the dissolved solute will eventually emerge from the solution.Solution concentration units:- Molarity is used to show the ratio of the moles of solute to the volume of the solutionMolarity= M=molesof soluteliters of solution- Molalityis used to describe the ratio of the moles of solute to the mass of the solventMolality=m=moles of solutemass of


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