Section 15.2 Describing Solution Composition 1. To understand mass percent and how to calculate it 2. To understand and use molarity 3. To learn to calculate.

Slides:

Advertisements

Similar presentations

SOLUTIONS Concentration Measurement: Molarity

Advertisements

Preparing Solutions Solutions are commonly prepared by –Using solid solute –Diluting a concentrated solution When preparing a solution from solid solute,

Concentrations of Solutions

Concentrations of Solutions

Molarity 2. Molarity (M) this is the most common expression of concentration M = molarity = moles of solute = mol liters of solution L Units are.

Making Dilutions from Solutions

Slide 1 of 46 © Copyright Pearson Prentice Hall Concentrations of Solutions > Molarity The _________________ of a solution is a measure of the amount of.

15 Solutions Section 2 Describing Solution Composition.

Chemistry 16.2.

Dilutions and Percent Solutions

Taking a concentrated solution and making it less concentrated.

TOPIC: Concentration and Dilution Do Now:. Parts of a Solution SoluteSolute = dissolved substance SolventSolvent = dispersing medium.

II III I II. Concentration Solutions. A. Concentration  The amount of solute in a solution.  Describing Concentration % by mass - medicated creams %

Solutions and their Behavior Chapter Identify factors that determine the rate at which a solute dissolves 2. Identify factors that affect the solubility.

Solution Formation The compositions of the solvent and the solute determine whether a substance will dissolve. The factors that determine how fast a substance.

End Show © Copyright Pearson Prentice Hall Slide 1 of 46 Concentrations of Solutions Water must be tested continually to ensure that the concentrations.

Chapter 16 Solutions 16.2 Concentrations of Solutions

Preparing Solutions LG: I can use formulas for concentration to prepare standard solutions from a solid.

SOLUCIONES. A solution is a homogeneous mixture, at the molecular level, of two or more substances. Simple solutions usually consist of one substance,

Unit 14 – Solutions 14.1 Solubility 14.2 Solution Composition 14.3 Mass Percent 14.4 Molarity 14.5 Dilution 14.6 Stoichiometry of Solution Reactions 14.7.

Chapter 13 Solutions. Solution Concentrations 3 Solution Concentration Descriptions dilute solutions have low solute concentrations concentrated solutions.

DETERMING CONCENTRATIONS OF SOLUTIONS. MOLAR Molar is mol solube/1 L solution Making molar solution 1)Add ½ of the total solvent 2)Add required amount.

Concentration Concentration is the amount of solute dissolved in an amount of solution. Molar concentration is called Molarity, or M. M = moles.

Molarity, Dilution, and pH

Notes 15.2 Describing Solution Composition. Mass Percent Mass percent= mass of solute X 100 mass of solution = grams of solute X 100 grams of solute +

1. 2 Solutions Why does a raw egg swell or shrink when placed in different solutions?

Section 15.2 Describing Solution Composition 1. To understand mass percent and how to calculate it Objective.

C. Johannesson Concentration Ch. 12- Solutions. Concentration A measure of the amount of solute dissolved in a certain amount of solvent. Concentrated.

Volumetric Analysis Topic 8.4 Titration readings in a normal titration you are usually advised to carry out at least one rough and two accurate.

II III I II. Solution Concentration (p. 480 – 488) Ch. 14 – Mixtures & Solutions.

Solution Composition & Concentration Mass Percent & Molarity!

Jeopardy Start Final Jeopardy Question Percent Solutions MolarityDilutions Mixed Practice

Solution Composition: 15.2 Homework: Page 555, #12a-c, 13ab, 18, 19, 20, 21a-d Tuesday, March 4, Turn in Lab 2.Vocabulary Words (Quiz Friday) 3.Section.

Solution Concentration. Concentration Describes the amount of solute dissolved in a specific amount of solvent.

Section 4.5 Concentrations of Solutions. Concentration Amount of solute dissolved in a given quantity of solvent or solution Amount of solute = Concentration.

Solutions, Problems, Solutions, Problems. Does it ever end?

Chapter 15 Solutions. 1.To understand the process of dissolving 2.To learn why certain substances dissolve in water 3.To learn qualitative terms describing.

Preparing Solutions.

PP & 8.7 Concentration and Preparing Dilutions.

Solutions & Solubility Solution Preparation by dilution.

Unit 4 : Solutions 8.4 – Dilution and Solution Preparation.

Dilution of Solutions.

DILUTION CALCULATIONS Molarity of Mixture = total moles of chemical in which we are interested total volume of mixture Dilute Solution – a solution with.

Dilution Problems. 2-step Molarity Problems Study them because that’s the process we need to go through if we are making a solution from a solid solute.

Stock Solutions Different experiments require solutions of various different molarities. It would not be practical to have multiple bottles of each type.

Solutions Molarity = concentration term used to describe an amount of solute dissolved in a given amount of solvent. Concentrated solution = contains large.

Section 15.1 Forming Solutions Steven S. Zumdahl Susan A. Zumdahl Donald J. DeCoste Gretchen M. Adams University of Illinois at Urbana-Champaign Chapter.

16.2 Concentrations of Solutions > 1 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. Chapter 16 Solutions 16.1 Properties.

Section 15.1 Forming Solutions 1.To understand the process of dissolving 2.To learn why certain substances dissolve in water 3.To learn qualitative terms.

K. Cumsille, 2010 AP CHEMISTRY UNIT 2: REACTIONS IN AQUEOUS SOLUTIONS Concentration, Dilutions, Gravimetric Analysis & Titrations.

Solution Concentration.  Lesson Objectives  Describe the concept of concentration as it applies to solutions, and explain how concentration can be increased.

Two methods for Preparation of a desired volume of a Molar Solution  1) Preparation from a solid solute.  2) Preparation by Dilution of a Concentrated.

Chemistry 20  A standard solution is any solution whose concentration is accurately known.  Dilution involves the addition of solvent to a solution.

Chemistry 16.2.

Solutions & Chemical Equilibrium

Unit 13: Solutions & Equilibrium

Making Dilutions from Solutions

DILUTING A STOCK SOLN To make a soln less concentrated: add solvent

Section 2 - Concentrations of Solutions

Ch Concentration Units

Preparing Standard Solutions

Section 2: Concentration

A dilute solution is one that contains a small amount of solute.

Which one of these is more concentrated?

Solutions & Molarity What is a solution?

Concentrations of Solutions

Molarity Calculate the concentration of a solute in terms of grams per liter, molarity, and percent composition.

A ______________ solution contains a ____________ amount of solute.

Preparing Solutions by Dilution

Presentation transcript:

Section 15.2 Describing Solution Composition 1. To understand mass percent and how to calculate it 2. To understand and use molarity 3. To learn to calculate the concentration of a solution made by diluting a stock solution Objectives

Section 15.2 Describing Solution Composition A. Solution Composition: Mass Percent

Section 15.2 Describing Solution Composition B. Solution Composition: Molarity Concentration of a solution is the amount of solute in a given volume of solution.

Section 15.2 Describing Solution Composition B. Solution Composition: Molarity Consider both the amount of solute and the volume to find concentration.

Section 15.2 Describing Solution Composition B. Solution Composition: Molarity To find the moles of solute in a given volume of solution of known molarity use the definition of molarity.

Section 15.2 Describing Solution Composition B. Solution Composition: Molarity Standard solution - a solution whose concentration is accurately known To make a standard solution –Weigh out a sample of solute. –Transfer to a volumetric flask. –Add enough solvent to mark on flask.

Section 15.2 Describing Solution Composition C. Dilution Water can be added to an aqueous solution to dilute the solution to a lower concentration. Only water is added in the dilution – the amount of solute is the same in both the original and final solution.

Section 15.2 Describing Solution Composition D. Dilution Diluting a solution –Transfer a measured amount of original solution to a flask containing some water. –Add water to the flask to the mark (with swirling) and mix by inverting the flask.