Chapter 7 Solutions 7.1 Solutions Copyright © 2005 by Pearson Education, Inc. Pu

Chapter 7 Solutions 7.1 Solutions Copyright © 2005 by Pearson Education, Inc. Pu www.phwiki.com

Chapter 7 Solutions 7.1 Solutions Copyright © 2005 by Pearson Education, Inc. Pu

Duff, David, Music Director has reference to this Academic Journal, PHwiki organized this Journal Chapter 7 Solutions 7.1 Solutions Copyright © 2005 by Pearson Education, Inc. Publishing as Benjamin Cummings Solute in addition to Solvent Solutions are homogeneous mixtures of two or more substances. consist of a solvent in addition to one or more solutes. Nature of Solutes in Solutions Solutes spread evenly throughout the solution. cannot be separated by filtration. can be separated by evaporation. are not visible, but can give a color to the solution. Copyright © 2005 by Pearson Education, Inc. Publishing as Benjamin Cummings

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Examples of Solutions The solute in addition to solvent in a solution can be a solid, liquid, in addition to /or a gas. Learning Check Identify the solute in each of the following solutions. A. 2 g sugar in addition to 100 mL water B. 60.0 mL of ethyl alcohol in addition to 30.0 mL of methyl alcohol C. 55.0 mL water in addition to 1.50 g NaCl D. Air: 200 mL O2 in addition to 800 mL N2 Solution Identify the solute in each of the following solutions. A. 2 g sugar B. 30.0 mL of methyl alcohol C. 1.5 g NaCl D. 200 mL O2

Water Water is the most common solvent. is a polar molecule. as long as ms hydrogen bonds between the hydrogen atom in one molecule in addition to the oxygen atom in a different water molecule. Copyright © 2005 by Pearson Education, Inc. Publishing as Benjamin Cummings Formation of a Solution Na+ in addition to Cl- ions on the surface of a NaCl crystal are attracted to polar water molecules. are hydrated in solution with many H2O molecules surrounding each ion. Equations as long as Solution Formation When NaCl(s) dissolves in water, the reaction can be written as H2O NaCl(s) Na+(aq) + Cl- (aq) solid separation of ions

Learning Check Solid LiCl is added to water. It dissolves because A. the Li+ ions are attracted to the 1) oxygen atom ( -) of water. 2) hydrogen atom (+) of water. B. the Cl- ions are attracted to the 1) oxygen atom ( -) of water. 2) hydrogen atom (+) of water. Solution Solid LiCl is added to water. It dissolves because A. the Li+ ions are attracted to the 1) oxygen atom ( -) of water. B. the Cl- ions are attracted to the 2) hydrogen atom ( +) of water. Like Dissolves Like Two substances as long as m a solution when there is an attraction between the particles of the solute in addition to solvent. when a polar solvent such as water dissolves polar solutes such as sugar in addition to ionic solutes such as NaCl. when a nonpolar solvent such as hexane (C6H14) dissolves nonpolar solutes such as oil or grease.

Water in addition to a Polar Solute Like Dissolves Like Solvents Solutes Water (polar) Ni(NO3)2 CH2Cl2(nonpolar) (polar) I2 (nonpolar) Learning Check Which of the following solutes will dissolve in water Why 1) Na2SO4 2) gasoline (nonpolar) 3) I2 4) HCl

Solution Which of the following solutes will dissolve in water Why 1) Na2SO4 Yes, ionic 2) gasoline No, nonpolar 3) I2 No, nonpolar 4) HCl Yes, polar Most polar in addition to ionic solutes dissolve in water because water is a polar solvent.

Duff, David WAPR-FM Music Director www.phwiki.com

Duff, David Music Director

Duff, David is from United States and they belong to WAPR-FM and they are from  Tuscaloosa, United States got related to this Particular Journal. and Duff, David deal with the subjects like Classical Music; Music Programming

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