CHM 151 Lecture Notes - Lecture 4: Volumetric Flask, Boron, Oxidation State

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30 May 2016

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Chapter 4 reactions in aqueous solution: solutions are defined as homogeneous mixtures of two or more pure substances. Solid solution, alloy; gas solution, air; liquid solution, wine, vinegar; Solvent: present in greatest abundance, is the dissolving medium of a solution. Solute: all other substances that are dissolved in a solvent to form a solution. A solution in which water (h2o) is the solvent is called an aqueous solution. Water is a polar molecule contains separation of partial + and charges. Water can dissolve ionic compounds and covalent compounds with polar groups (nh, oh) Nonpolar compounds (benzene, oil, fat, methane) do not dissolve in water. Soluble ionic compounds dissociate into their ions in solution. Dissolution is the process by which a solute (solid, liquid or gas) form a solution in a solvent. Electrolyte: a substance that dissociates into ions when dissolved in water. Strong electrolyte dissociates completely when dissolved in water. Weak electrolyte only dissociates partially when dissolved in water.

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BAEDitemViewlassignmentProblemiD-830644918offset next 121C1 12 Introduction to Solutility and Solution Formation troduction to Solubility and Solution Formation arning Goal understand the solubility of a solute in a solvent, the dissoltion p peocess, and the properties that afect the rate of dissoluÅ¡on ocess, and the properties that affed the rate of cola has a certain amount of carbon dioxide dissolved in t The cola is theretore olecular level, the dissolution process involves breaking intermolecular forces of aty action rious parameters, such as temperature, pressure, the nature of the solute, and the r example an incresse in temperature may increase the rate of dissoludon for solutions hwolving solds an example of a solution of gas in waler. The carbon daxide gas is the solute and it is diessved in water,which is nature of the solvent One can increase or decrease the solubility of solute by changing hese parameters e f the solvere At the among the solute molecules and forming new ones with the solvent moleciles The solublty af a solute in a salent depend art A The properties of a solute and its solubility in liquid solvents A solution is a homogenous mixture of solute and solvent There are diHarent types of soluions. A carbonated drink ia an example of a solution where the solute is a gas and ths saveet is a iquid Sugar crystas a in water is an example of a solution where the solute is a solid and the solvent is liquid Aceic acid is miscible in water, forming a solution commonly known as vinegar ln this case both the solure and the sohen iquids The solubility of solute in a solvent depends on various parsmeters, such as temperature pressura, tha nature of the solute, and the nature of the salvent Considaring thesa paranters iderdfy the ts correct for the solublity of a solute in a solvent Check all that apply Hints Table salt dissolves in water to form a solution Zinc sullate is soluble in water Gases are readly soluble in water t higher tamperatures Carbon dioxide gas will be more soluble in water when the partial pressure is high Propanol and heptane are miacible Dei My Awers Give Up

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CHM 151 Lecture Notes - Lecture 4: Volumetric Flask, Boron, Oxidation State

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