Solutions Separating solutions Concentrations and Molarity

Slides:

Advertisements

Similar presentations

Stoichiometry Continued…

Advertisements

Chapter 9 Combining Reactions and Mole Calculations.

Chapter 9 Combining Reactions and Mole Calculations.

Concentration of Solutions. Concentration is a measure of the amount of solute dissolved in a solution. There are many ways to measure the concentration.

SOLUTIONS. Homogeneous mixture containing two or more substance called the solute and the solvent. SOLUTE: Substance that is dissolved (lower quantity).

1 Ca 2+ + CO 3 2- CaCO 3 NH 3 + H + NH 4 + Zn + 2HCl ZnCl 2 + H 2 Ca + F 2 CaF 2 Precipitation Acid-Base Redox (H 2 Displacement) Redox (Combination) Classify.

Chapter 12 Lecture Basic Chemistry Fourth Edition Chapter 12 Solutions 12.1 Dilution and Chemical Reactions in Solution Learning Goal Calculate the new.

Stoichiometry: Mass-Volume and Mass-Energy Relationships.

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 / V = mol / L 2.

Concentration. Solution Concentration Concentration = quantity of solute quantity of solution There are 3 basic ways to express concentration: 1) Percentages.

Solution Concentration. Calculations of Solution Concentration: Mass Percent Mass percent Mass percent is the ratio of mass units of solute to mass units.

SEPARATING SOLUTIONS CONCENTRATIONS AND MOLARITY SOLUBILITY AND DISSOLVING Solutions.

Molarity and Molality.

Chapter 13: Solutions.

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 %

Concentration of Solutions. Review: Solutions are made up of 1)Solute - substance dissolved or present in lesser proportion 2) Solvent - substance that.

Friday, Feb. 21 st : “A” Day Monday, Feb. 24 th : “B” Day Agenda  Collect chromatography labs  Begin Section 13.2: “Concentration and Molarity” 

13.5 Solution concentration

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

Preparing a Molar Solution

AP/IB Chemistry Chapter 4: Aqueous Solutions and Solution Stoichiometry.

1 SOLUTIONS A N I NTRODUCTION. 2 Objectives 1. What are different ways of expressing the concentration of a solution? When is each used?

Properties of Solutions

Molarity = Molarity ( M ) moles solute liters of solution

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 +

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

I. I.Stoichiometric Calculations Topic 9 Stoichiometry Topic 9 Stoichiometry.

Percent by mass, mole fraction, molarity, and molality

Assignment 5.07: Solution Stoichiometry. Solution Concentration (Review of 5.06) Molarity = moles of solute/Liters of solution 25.2 g of NaCl dissolved.

Ch Concentration of a Solution The concentration of a solution is a measure of the amount of solute in a given amount of solvent or solution. Chemists.

Solutions Chapter 13 & 14. Solution  A uniform mixture that may contain solids, liquids, or gases  Also called a homogeneous mixture  Composed of a.

Solutions Concentration of Solutions. Objectives 1.Define molarity and calculate its value. 2.Define molality and calculate its value. 3.Apply the principles.

Daily Inquiry: 1.Many solutions are described as concentrated or dilute. Distinguish between these two terms. 2.A solution is made by dissolving 4.75 g.

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

Chapter Units of Concentration unitless Definition same.

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

Ch. 13/14: Solutions Describing a Solution’s Composition.

Daily Inquiry: 1.Many solutions are described as concentrated or dilute. Distinguish between these two terms. 2.A solution is made by dissolving 4.75 g.

1. General Terms a. concentratedLots of solute dissolved in the solvent b. diluteLittle solute in the solvent 2. Specific terms a. Percent by mass Describes.

II. Stoichiometry in the Real World Stoichiometry.

Molarity, pH, and Stoichiometry of Solutions Chapter 5 part 4.

MRS. PLATT HAD TO GO GET A NEW CANISTER OF PROPANE. WHEN SHE GOT BACK, IT WAS USED TO FIRE UP THE GRILL DURING A BACKYARD BARBEQUE. WHAT IS THE REACTION.

Moles and Molarity Part 2. Molarity Often, chemists use deal with chemicals in solution form. A SOLUTION is a type of MIXTURE in which one substance is.

Molarity Molarity is defined as the amount of moles of a compound dissolved in an amount of solvent (usually water). It can be solved with the equation:

Calculations using moles 2

Putting it all together

S-C-9-3_Concentrations Presentation

Solution Concentration

9.4 Solution Concentrations and Reactions

Aim # 18: What are some other methods of expressing the concentration of a solution? H.W. # 18 Study pp (sec ) STUDY class notes Complete.

DO NOW Pick up Notes. Get out Solubility handout and Concept Review handout.

Acids, Bases, and Solutions

Solutions II. Concentration.

Chapter 12 Review.

Ch. 3 & 7 – The Mole II. Molarity (p ) C. Johannesson.

12-3: Concentration of Solutions

Ch. 3 & 7 – The Mole II. Concentration (p )

Bellwork Friday Draw and finish filling in the mole road map to the right.

Concentration of Solute

Which statement describes KCl(aq)?

Solution Concentrations

Which one of these is more concentrated?

Concentrations of Solutions

Warm-up Define solute and solvent What is a super saturated solution?

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

Table of Contents Chapter 15: Solutions.

Molarity and Stoichiometry

Presentation transcript:

Solutions Separating solutions Concentrations and Molarity Solubility and Dissolving

Concentration Concentration – the amount of particular substance in a given quantity of a solution. Concentration can be expressed in many forms: ppm – parts per million molarity – moles solute over liters solution molality – moles solute over kg of solvent We can make these calculations if we know the quantity of solute and volume (quantity) of solvent.

Molarity We often use molarity when dealing with concentrations. Molarity – a concentrations unit of a solution expressed as moles of solute dissolved per liter of solution. How MUCH solute is in how MUCH solvent M = mol / L

Molarity Molarity describes a solution in terms of volume of solution not volume of solvent. If you need 1 Liter of solution, you are NOT adding 1 Liter of solvent. You must add “enough” solvent to make the total volume 1 Liter. The solute will take up some of the volume. You can determine the number of moles of solute if you know the mass used.

Practice Problems What is the molarity of a potassium chloride solution that has a volume of 400.0 mL and contains 85.0 g KCl?

Practice on your own Vinegar contains 5.0 g acetic acid, CH3COOH, in 100.0 mL of solution. Calculate the molarity of the acetic acid in the vinegar. What mass of KCl is present in 25 mL of a 0.85 M solution of potassium chloride?

Solution Stoichiometry Solutions of known concentrations are often used in the lab. When reactions involving these solutions occur, we can use stoichiometry to calculate the mass of products we should obtain. We could then use this amount of product formed along with the total volume of the system to determine the concentration of product formed.

___ Zn + ___ HCl  ___ ZnCl2 + ___H2 Soln. Stoich. Practice An excess of zinc is added to 125 mL of 0.100 M HCl solution. What mass of zinc chloride is formed? ___ Zn + ___ HCl  ___ ZnCl2 + ___H2

Soln. Stoich. Practice What volume (in milliliters) of a 0.500 M solution of copper (II) sulfate is needed to react with an excess of aluminum to provide 11.0 grams of copper? Hint: Step 1: Write out and balance your reaction

Work on Solution Stoich WKST – Due tomorrow Vocab Sheet due Tuesday