Concentrations 12.4. Homework Show me that you’ve finished! Let’s check your answers.

Slides:

Advertisements

Similar presentations

SOLUTIONS Chapter 15.

Advertisements

Calculations Involving Colligative Properties. Introduction We now understand colligative properties. To use this knowledge, we need to be able to predict.

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

Physical Properties of Solutions Chapter 13. 8/21/86 CO 2 Cloud Released 1700 Casualties Lake Nyos, West Africa Earthquake? Landslide? Wind/Rain?

Solutions Chapter 12 Modern Chemistry

Laboratory Solutions. Solute The substance that is being dissolved NaCl.

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

Molarity and Molality.

Molarity, Molality, Dilutions, Percent Solutions, & Mole Fractions

Properties Of Solution

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

C h a p t e r 11 Solutions and Their Properties. Kinds of Solutions01 Kind of SolutionExample Gas in gasAir (O 2, N 2, Ar …) Gas in liquidCarbonated water.

As you come in,  Collect the following: Solubility Graph Quiz, Concentration Quiz, paper, pencil, calculator, periodic table  Priorities: 1. Correct.

1 Concentration of Solute The amount of solute in a solution is given by its concentration The amount of solute in a solution is given by its concentration.

Sec. 14.2: Solution Concentration

Example A MgSO 4 (FW= g/mol) aqueous solution has a weight fraction of 0.2. What is the molality of the solution? Solution A 0.2.

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

Chapter 12: Solutions CHE 124: General Chemistry II Dr. Jerome Williams, Ph.D. Saint Leo University.

Solution Concentration

Solutions. Definitions n A solution is a homogeneous mixture n Solvent is the liquid in which the solute is dissolved n an aqueous solution has water.

Solutions Concentrations of Solutions. Solutions  Objectives  Given the mass of solute and volume of solvent, calculate the concentration of solution.

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

AP Chemistry Chapter 13 Jeopardy Jennie L. Borders.

As you come in,  Pass up the Calories in a Chip Lab.  Get paper, pencil, and calculator ready for notes on calculations.  NOTE: Solubility Graph Quiz.

III. Molarity Topic 9 The Mole. A. Molarity Concentration of a solution. total combined volume substance being dissolved.

CHP 12 solutions Concentration There are numerous ways to measure concentration –(amount of solute/amount of solvent or soln) Molarity, M Molality, m.

SOLUTIONS Chapter 15. Solution = homogeneous mixture Solute = gets dissolved (minor component) Solvent = dissolving agent (major component)

Physical Properties of Solutions Chapter 13. Factors Affecting Solubility Glucose (which has hydrogen bonding) is very soluble in water Cyclohexane (which.

Chapter 20 Concentration. Molarity (M) Moles of solute per liter of solution. Molarity = moles of solute liters of solution.

Percent by mass, mole fraction, molarity, and molality

% by Mass Another way to measure the concentration of a solution % by mass = mass solute x 100 mass solution Solution = solute + solvent.

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.

Chapter 20 Concentration. Molarity (M) Moles of solute per liter of solution. Molarity = moles of solute liters of solution.

Unit # 4 Colligative Properties.. Colligative Properties - Properties that depend on the concentration of solute molecules or ions in solution, but do.

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

Solution Concentration

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

Quantitative Chemical Analysis. ACCURATEACCURATENOT Accurate PRECISENOT precisePRECISE Random errorsystematic error.

Concentration Units The concentration of a solution is the amount of solute present in a given quantity of solvent or solution. Percent by Mass x 100%

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

Concentration  A measure of how much solute is dispersed throughout the solvent  Molarity (M), molality (m), and mole fraction ( χ ), mass percent.

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.

Biotech Equations. Preparing Solutions What is a solution? – Mixture of two ore more substances Solutions have two parts – Solute – substance that is.

SOLUTIONS Chapter 15. Solution = homogeneous mixture Solute = gets dissolved (minor component) Solvent = dissolving agent (major component)

Unit # 4 Colligative Properties.. Colligative Properties - Properties that depend on the concentration of solute molecules or ions in solution, but do.

Solutions Part II: Concentration Units. Percent solutions.

Solubility Why was the sleep-deprived chemistry student staring at the orange juice carton? Because it said “CONCENTRATE”

POINT > Define molarity and solve associated problems POINT > Define molality and solve associated problems.

1 Chapter 15: Solutions Concentration: Molarity & Mass Percent Ch 15 ppt 2 - Molarity.ppt.

1 Concentration Day 2: Chapter 14. CONCENTRATION The amount of solute present in a set amount of solvent or total solution. The amount of solute present.

Concentration can be expressed in terms of percent or in terms of moles. Section 2: Solution Concentration K What I Know W What I Want to Find Out L What.

WARM UP ACT Prep Passage V 5 minutes Start when the bell rings.

SOLUTIONS Chapter 15. Solution = homogeneous mixture Solute = gets dissolved (minor component) Solvent = dissolving agent (major component)

ACT Prep Passage V 5 minutes Start when the bell rings

S-C-9-3_Concentrations Presentation

Solution Concentration

Concentration of Solute

Solution Concentration

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

Concentration of Solute

Chapter 12.3 concentration –

Solution Concentrations

Chapter 13.5 Expressing solution concentration

Which one of these is more concentrated?

Solution Concentration

Aim: How do you express concentration of a solution

Concentration of Solutions :

Table of Contents Chapter 15: Solutions.

Presentation transcript:

Concentrations 12.4

Homework Show me that you’ve finished! Let’s check your answers

Colligative Properties Define: Properties that depend on the concentration – solute molecules – ions in solution Independent of the chemical identity of the solute

Concentration Define: amount of solute dissolved in a given quantity of solvent or solution. Examples of things that need to have the right concentration. – Pop-Paint – Perfume-soap

Molarity Define Moles of solute Liter of solution

What is the molarity of a solution made be dissolving 10 g NaCl in 50 mL of water?

Mass Percentage Mass of solute* 100 Mass of solution

What is the mass percentage of NaCl when 10 g are dissolved in 90 g of water?

How would you prepare 425 g of an aqueous solution containing 2.40% by mass of sodium acetate?

An experiment calls for 35.0 g of HCl that is 20.2% HCl by mass. How many grams of HCl is this? How many grams of H 2 O?

Molality Define: Moles of solute Kilogram of solvent

Glucose, C 6 H 12 O 6 is the body’s main source of energy. What is the molality of a solution containing 5.67 g of glucose dissolved in 25.2 g of water?

Find the molality of toluene in a solution that contains 35.6 g of toluene, C 6 H 5 CH 3 in 125g of benzene, C 6 H 6.

Mole fraction Define: Moles of substance A Total moles of solution

What is the mole fraction of glucose and water in a solution containing 5.67 g of glucose dissolved in 25.2 g of water?

What are the mole fractions of toluene and benzene in a solution that contains 35.6 g of toluene, C 6 H 5 CH 3 in 125 g of benzene, C 6 H 6.

Converting Molality to Mole Fraction An aqueous solution is m glucose. What are the mole fractions of each component in the solution?

A solution is m methanol dissolved in ethanol. Calculate the mole fractions of methanol, CH 3 OH and ethanol, C 2 H 5 OH in the solution

Mole fraction to Molality A solution is mole fraction glucose and mole fraction water. What is the molality of glucose in the solution?

A solution is mole fraction methanol, and mole fraction ethanol. What is the molality of methanol in the solution?

Converty Molality to Molarity An aqueous solution is m KCl. What is the molar concentration of potassium chloride, KCl? The density of the solution is 1.011*10 3 g/L.

Urea, (NH2)2CO, is used as a fertilizer. What is the molar concentraion of an aqueous solution that is 3.42 m urea? The density of the solution is g/mL.

Converting Molarity to Molality An aqueous solution is 0.907M Pb(NO 3 ) 2. What is the molality of Pb(NO 3 ) 2 in this solution? The density of the solution is g/L.

An aqueous solution is 2.00 M urea. The density of the solution is g/mL. What is the molal concentration of urea in the solution?

Homework 39 – 57 odds