CHEM 121 Chapter 8 Winter 2014 1. Mixtures Heterogeneous mixture: 2 Homogeneous mixture: Solution:...

CHEM 121

Chapter 8

Winter 2014

Mixtures

Heterogeneous mixture:

Homogeneous mixture:

Solution:

Colloid:

SolutionsSolution =

Solute

Solvent

Types of Solutions• Colloids:

• Suspensions:

Solubility

Most ionic and polar substances __________________

Most nonpolar substances _______________________

___________ can be endothermic or exothermic

Solvation• Example: NaCl

+ - + - + -+- +-+-

Solubility

Amount of solute that can dissolve in a given amount of solvent

Solubility rules p. 247

Temperature and Solubility

As T increases….

Pressure and Solubility

What dissolves?• Gases form solutions easily

• Solids and liquids:

Dissolving RateDifferent from solubility

How to increase dissolving rate:

• 11

Concentration

Weight Percent =

Volume Percent =

Weight/Volume Percent =

3-minute Practice

The amount of alcohol in a bottle of wine is labeled 13.5% (v/v). How much alcohol is in the entire 750. mL bottle?

ppm and ppb

Parts per million =

Molarity

Molarity (M) =

What is the molarity of the solution created when you dissolve 2.5 g of NaOH in 100. mL of solution?

3-minute Practice

How many grams of NaOH would you have to dissolve in water to make 100. mL of a 1.0 M solution?

DilutionAdd more water:

Volume?

Concentration?Amount of solute? Number of moles of solute?

3-minute Practice

Suppose you have a 1.0 M NaOH solution, but you want a 200. mL of a 0.25 M NaOH solution. How would you make this solution?

Aqueous Reactants

You have 250 mL of 1.0 M NaOH. How many moles NaOH?

)(SOH)(NaOH 42 aqaq )(OH )(SONa 242 laq

How much 0.2 M H2SO4 solution would you need to completely react the NaOH?

5-minute Practice

You have: 200. mL of 2.0 M H2SO4 and

500. mL of 1.5 M NaOH

)(SOH)(NaOH 42 aqaq )(OH )(SONa 242 laq

How much water (g) can you make?

Hints: 1.Go to moles of each2.Determine which is limiting!

Electrolytes

Electrolyte:

• Strong electrolyte:

Weak Electrolytes and Nonelectrolytes

• Weak electrolytes: • •

• Nonelectrolytes: •

)(OHC OHC 112212OH

1122122 aq(s)

Colligative PropertiesProperties that change based on dissolved concentration

Boiling point elevation:

Freezing point depression:

Osmotic pressure:

5-minute practice

You fill a pot with 320. g of NaCl and enough water to total 1.50 L of solution.

What is the boiling point of this solution?

MembranesSemipermeable:

OsmosisOsmosis:

Osmotic Pressurepressure needed to prevent net flow of solvent through a semipermeable membrane

constant

Dialysis:

CHEM 121 Chapter 8 Winter 2014 1. Mixtures Heterogeneous mixture: 2 Homogeneous mixture: Solution:...

Documents

Transcript of CHEM 121 Chapter 8 Winter 2014 1. Mixtures Heterogeneous mixture: 2 Homogeneous mixture: Solution:...

Chapter Two Properties of Matter. Matter Pure Substance ElementCompoundMixture Homogeneous mixture Solution Heterogeneous mixture ColloidSuspension Classification.

SOLUTIONS A homogeneous mixture in which the components are uniformly intermingled.

Pure Substances, Mixtures, and Solutionsphhsicpchemistry.weebly.com/.../icpchem_pure_substances_mixtures_and_solutions_pdf.pdfHomogeneus mixtures Homogeneous mixtures : is a mixture

What Are Solutions? Solution: homogeneous mixture of 2 or more substances Solution: homogeneous mixture of 2 or more substances –Solid, liquid, or gas.

GENERAL CHEMISTRY 101 Matter Mixture Pure Substance Physical Change Heterogeneous Mixture Homogeneous Mixture ElementCompound Chemical Change.

Ch 13 Solutions. Solutions Solution: homogeneous mixture of two substances. Each substance retains its identity. Solution: homogeneous mixture of two.

Pure substances, properties. MIXTURES heterogeneous homogeneous Suspension ? ✗ Colloid Solution PURE SUBSTANCES compounds elements MATTER Contain only.

Solution A homogeneous mixture of two or more substances.

Chapter 15 - Solutions. Characteristics of solutions Solution – homogeneous mixture Solution – homogeneous mixture a) parts of a solution i) solute –

A. Homogeneous Mixture- uniform throughout A. Homogeneous Mixture- uniform throughout B. One or more substances dissolved in another B. One or more substances.

Classifying Matter Quiz Page 35. 1. a) element b) compound c) Homogeneous Mixture d) Heterogeneous Mixture 1. a) element b) compound c) Homogeneous Mixture.

Chapter 7 Acids, Bases, and · PDF fileChapter 7 Acids, Bases, and Solutions Chapter Preview Questions 1. A solution is an example of a a. homogeneous colloid. b. heterogeneous colloid

Ignition Process in a Non-Homogeneous Mixture

What is a solution?. Vocabulary Heterogeneous Mixture Homogeneous Mixture Precipitate Solute Solution Solvent Substance.

What is a homogeneous mixture? Solutions JIGSAW Part 1.

Solution Homogeneous mixture in a single phase.. Classification of Matter Matter Pure Substances ElementsCompounds Mixtures Homogeneous Mixtures Heterogeneous.

Introduction SC/BC Objective Indicator Content Problem Quit Homogeneous and Heterogeneous Mixture.

Homogeneous nucleation of sulfuric acid and water mixture: … · 2016-01-11 · D. Brus et al.: Homogeneous nucleation of sulfuric acid and water mixture 2633 23 Fig. 2. Fig. 2.

Salt, baking soda, water, sugar oxygen, iron, hydrogen, gold Matter Mixture Pure Substance ElementsCompounds Heterogeneous Mixture Homogeneous Mixture.

Solutions Mixtures Heterogeneous mixture: substances in mixture are not spread uniformly throughout mixture. Homogeneous mixture: components uniformly.