Topic: Dilution Do Now:

Slides:

Advertisements

Similar presentations

Molarity & Dilution Aleigha Benoit Chemistry 12 December 15th.

Advertisements

1 Chapter 10 Acids and Bases 10.10Dilutions. 2 Dilution Diluting a solution Is the addition of water. Decreases concentration. ConcentratedDilutedSolution.

Molarity and Dilutions

Concentration of solutions CONCENTRATED = Lots of solute in the solution DILUTE = Not much solute in the solution.

Solution Concentration Concentration – how much solute dissolved in amount of solvent Concentration – how much solute dissolved in amount of solvent what.

Making Dilutions from Solutions

Examples-Molarity and Dilutions. Example What is the molarity of a solution that contains 4.5 moles of sucrose in L of water?

Solutions Calculations. Questions 1.What mass of NaOH is needed to make 350 mL of 0.45 mol/L NaOH solution? 2.What is the molarity if 25 g of KClO 3 is.

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

Chapter 12 Solutions 12.5 Molarity and Dilution.

Solution Concentration Notes

Dilutions. Solve problems involving the dilution of solutions. Include: dilution of stock solutions, mixing common solutions with different volumes and.

Thursday, March 6, 2008 Discussion of Molarity Lab Results Introduce Section 15.2b -- Dilutions Homework: Pg. 555, #31a-d, 32, 33, 34.

Unit 10B Review Reg Chem When a solution sits out over a long period of time and water evaporates the concentration of the solution __________.

Molar Concentration. Measuring Concentration Molarity (M): the number of moles of solute in 1 liter solution. Example: 0.5 moles of NaCl dissolved in.

Preparing a Molar Solution

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.

Molarity = Molarity ( M ) moles solute liters of solution

a measure of the amount of solute that is dissolved in a given quantity of solvent unit of measurement is Molarity (M) which is moles/liter can be dilute.

Concentration Units: Terms like “dilute” and “concentrated” are not specific. Percent by Mass: Mass % = mass of solute x 100 Total mass of solution Recall:

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

INTRODUCTION TO SOLUTIONS/ACIDS AND BASES HONORS CHEMISTRY MAY 27 TH, 2014.

MOLARITY A measurement of the concentration of a solution. Molarity (M) is equal to the moles of solute (n) per liter of solution M =__n__ = mol volL.

Chemistry: An Introduction to General, Organic, and Biological Chemistry, Eleventh Edition Copyright © 2012 by Pearson Education, Inc. Chapter 7 Solutions.

Molarity  Unit of Concentration  There are many units of concentration  Molarity is most useful to the chemist M = moles of solute Liters of solution.

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

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

Making Dilutions. Diluting a solution reduces the number of moles of solute per unit volume, but the total number of moles does not change. Higher molarity.

Solutions & Solubility Solution Preparation by dilution.

Basic Chemistry Copyright © 2011 Pearson Education, Inc Molarity and Dilution Chapter 12 Solutions.

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.

1 Learning Check If we dissolve 40.55g of FeCl 3 in enough water to make 500. mL of the solution, what is the molarity of the solution? Convert all unit:

Topic 6. 5 Solutions. Solutions are homogeneous mixtures. The most common way to express solution concentration is by molarity.

CONCENTRATION AND DILUTIONS. Concentrations of Solutions ■a dilute solution contains only a small amount of solute ■concentrated solution contains a large.

Dilution Adding water to a solution. Dilution The number of moles of solute doesn’t change if you add more solvent! The # moles before = the # moles after.

Solution Concentrations The measured amount of solute in a given amount of solvent or solution.

9.5 Dilution of Solutions In a dilution, a solvent, usually water, is added to a solution, which increases its volume and decreases the concentration.

Molarity Thornburg 2014.

Solutions & Chemical Equilibrium

Unit 13: Solutions & Equilibrium

Dilution Chapter 15 Ch 15 ppt 3 - Dilution.ppt

Making Dilutions M1 x V1 = M2 x V2

Making Dilutions from Solutions

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

Solutions Review What is the molarity of a solution made by dissolving 0.35 mol in 145 milliliters of solution?

Molarity (M): State the ratio between the number of moles of solute & the volume of solution (in liters). Molarity (M) =

12.4 NOTES Solution Concentration

Unit 13: Solutions & Equilibrium

Section 2: Concentration

Molarity & Dilution.

Molarity and Dilution Solution Chemistry.

Unit 8: Concentration and Molarity (M)

Solutions Section 3: Dilutions Dilutions Calculations print 1-3,5-7.

Concentration of Solutions

Concentration of solutions

Unit 3, Lesson 14: Dilutions

Which one of these is more concentrated?

Dilutions M1V1=M2V2.

Molarity REview.

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

Preparing Solutions by Dilution

Molarity (M): State the ratio between the number of moles of solute & the volume of solution (in liters). Molarity (M) =

Presentation transcript:

Topic: Dilution Do Now:

Amount of solute is constant Amount of solvent increases Dilution Amount solute in concentrated solution EQUALS Amount solute in dilute solution Amount of solute is constant Amount of solvent increases

original solution is diluted What can say about number of solute particles in a & c? # is the same! amount of solvent has increased!

REMINDER: Molarity Molarity = # of moles of solute Liters of solution

MC x VC = MD x VD MolarityC x VolumeC = MolarityD x VolumeD (C = concentrated D = dilute)

300ml of 2. 5M NaOH is diluted to 750ml 300ml of 2.5M NaOH is diluted to 750ml. Find the molarity of the diluted solution

Example: We are doing a lab and the procedure calls for 300ml 1 Example: We are doing a lab and the procedure calls for 300ml 1.2 M NaOH. However, all we have is a bottle of 5.5M NaOH. Anytime you work with Molarity, if have to convert to L We have to dilute it!!!! The Equation: MC x VC = MD x VD 5.5 M x VC = 1.2 M x 0.3 L V1 = (1.2 M x 0.3 L) 5.5 M V1 = 0.065 L = 65 mL So what does 65 ml tell us?!

To prepare the 1. 2 M NaOH solution, you pour 65 mL of 5 To prepare the 1.2 M NaOH solution, you pour 65 mL of 5.5 M NaOH into your container and add water to get 300 mL final volume (300-65 = 235 ml water added)

Dilution: another practice