To Do Finish reading Chapter 4. Text homework for Chapter 4.

Slides:

Advertisements

Similar presentations

Second Exam: Friday February 15 Chapters 3 and 4. Please note that there is a class at 1 pm so you will need to finish by 12:55 pm. Electronic Homework.

Advertisements

Example 1 How many mL of M NaOH will completely neutralize 100 mL M H2SO4?

Solution Stoichiometry. Solution Concentration: Molarity What is the concentration of a solution made by dissolving 23.5 g NiCl 2 into a volume of 250.

To Do Finish reading Chapter 4. Text homework for Chapter 4. Quiz #2 on Friday, February 13 Lon-Capa assignment #3. 1.

Sample Titration Problems

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.

Have you ever noticed this? “Hard” water has ions that are dissolved in it, but can eventually combine with other ions to form a solid, and precipitate.

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

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

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

Solutions Chapter 14. solution Homogeneous mixture of 2 or more substances in a single physical state –particles in a solution are very small –particles.

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:

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

Chemistry Learning Center 230 Davenport Hall Chemistry TAs available from 9 am – 5pm Mondays – Fridays. Chemistry 202 TAs in the CLC: Mondays: 11am-1pm,

Solution Concentrations

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.

Solutions Chapter 14.

MEASURING CONCENTRATION OF IONS IN SOLUTION Molarity is ONE way to do this…we will learn others later in the year!!!

Dissolving of an Ionic Compound 1. Figure 7-2 p124.

Warm-Up Nitrogen and hydrogen gas react to form ammonia according to the reaction N2 (g) + 3H2 (g) –> 2NH3 (g) If a flask contains the mixture of reactants.

Molarity • Molarity is a measure of molar concentration

Making Molar Solutions From Liquids (More accurately, from stock solutions)

To Do Finish reading Chapter 4. Text homework for Chapter 4. Quiz #2 on Friday, February 12 Lon-Capa assignment #3. 1.

Stoichiometry In Solution Chemistry. Stochiometry involves calculating the amounts of reactants and products in chemical reactions. If you know the atoms.

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:

Unit X - Solutions Chapter Goals 1. Understand the process of dissolving and why certain substances dissolve in water. 2. Understand the qualitative.

Types of Chemical Reactions & Solution Chemistry

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.

9.5 Solutions stoichiometry.

Chemistry 202 Dr. Don DeCoste 3014 Chemistry Annex

Chemistry 202 Dr. Don DeCoste 3014 Chemistry Annex

As always… Lon-Capa assignments Lecture videos Textbook Read

As always… Lon-Capa assignments Lecture videos Textbook Read

As always… Lon-Capa assignments Lecture videos Textbook Read

To Do… Electronic homework Exam 2: Thursday, March 15 OWL:

To Do… OWL: due Wednesday (2/21) and Friday (2/23).

Chemistry Learning Center

Announcements Be respectful – no electronics please!

To Do… Electronic homework OWL:

Clicker #1 You add mL of water to mL of a 2.00 M sugar solution. How many of the following will change? I. total volume of the solution II. moles.

Chemistry Learning Center

Chemistry 102 Dr. Don DeCoste 367J Noyes Lab

Stoichiometry and molarity practice

James Scholar Opportunity

As always… OWL Lon-Capa assignments Lecture videos Textbook

Lon-Capa Lon-Capa: 5th HW assignment due Friday 10/21 by 5 pm.

12-3: Concentration of Solutions

Chemistry 202 Dr. Don DeCoste 3014 Chemistry Annex

Lon-Capa 6th HW assignment due Friday, 11/4, 5 pm. It is open now.

Lon-Capa 8th (final) HW assignment due Wednesday, November 30 by 5 pm.

Announcements Be respectful – no electronics please!

Clicker #1 Which of the three solutions is the most concentrated?

Announcements Be respectful – no electronics please!

Clicker #1 Which of the three solutions is the most concentrated?

As always… OWL Lon-Capa assignments Lecture videos Textbook Read

For Friday Lon-Capa Chapter 6 videos Chapter 6 homework.

Announcements Be respectful – no electronics please!

Clicker #1 Which of the three solutions is the most concentrated?

Lon-Capa 3rd HW assignment due today 5 pm. 2nd Quiz due today by10 pm.

Announcements Be respectful – no electronics please!

Clicker #1 You add mL of water to mL of a 2.00 M sugar solution. How many of the following will change? I. total volume of the solution II. moles.

To Do… Electronic homework Exam 2: Thursday, March 15 OWL:

Clicker #1 You add mL of water to mL of a 2.00 M sugar solution. How many of the following will change? I. total volume of the solution II. moles.

Bell Ringer # 5: What volume of 8.2 M NaOH stock solution would be required to prepare 250 mL of a 0.50 M NaOH solution? Data: M1 = 8.2 M V1 = ? M2 =

Chemistry 202 Dr. Don DeCoste 3014 Chemistry Annex

Announcements Exam 1 – Tuesday September 24, 7:00 pm

Chemistry 202 Dr. Don DeCoste 3014 Chemistry Annex

Presentation transcript:

To Do Finish reading Chapter 4. Text homework for Chapter 4. Quiz #2 on Friday, February 12 Lon-Capa assignment #3.

Exam Tuesday, 2/16, 7:00-8:30 pm; rooms online. Conflict exam; 2/16, 5:00-6:30 pm; in 153 Mechanical Eng. Bldg. Sign up in 367 Noyes Lab Review sessions Saturday (2/13): 3:30-5:00 pm Chem. Lib. Sunday ( 2/14 ): 1:00-2:00 pm in 217 NL

Practice Problem (last time) Describe how to make 250.0 mL of 0.100M NaOH from a stock solution of 8.00M NaOH.

Clicker Question You mix a 3.00 M sugar solution with a 5.00 M sugar solution. Which of the following best describes the concentration of the new solution? a) Less than 3.00 M. b) Between 3.00 M and 5.00 M. c) 8.00 M. d) Greater than 8.00 M. e) The answer could be more than one of the above choices depending on the volumes of the original solutions.

A Question For You… You mix 200.0 mL of a 3.00 M sugar solution with 500.0 mL of a 5.00 M sugar solution. Determine the concentration (in molarity) of the resulting sugar solution.

Problem Solving Approach What are we trying to solve? That is “where are we going?” What does this mean? What do we know? That is, “where have we been?” What procedures do we know? That is, “how do we get there?” Requires knowledge and understanding!

Chapter 4: #60 What mass of silver chloride can be prepared by the reaction of 100.0 mL of 0.20M silver nitrate with 100.0 mL of 0.15M calcium chloride? Also, calculate the concentrations of each ion remaining in solution after precipitation is complete.

A Question for You… Consider a 1.50 g mixture of sodium nitrate and sodium chloride. The mixture is dissolved in 100 mL of water to which is added an excess of 0.500M silver nitrate. A white solid is collected, dried, and found to have a mass of 3.14 g. Calculate the percent sodium chloride by mass in the original unknown mixture.