Solutions Chemistry Lowell High School. Agenda FYI Introductions Preamble #1 Monday, January 29,...

Solutions

Chemistry

Lowell High School

Agenda FYI Introductions Preamble #1

Monday, January 29, 2007

FYI’s Lab notebook 1/31

Wednesday Book Check 2/5 Monday Binder Check 2/5 Monday RLog 15 2/6 Tuesday


First Day Stuff Website:

http://geocities.com/lowellchemistry Ms. Rotter Teammates/ Class setup Reading Logs Lab notebooks (Thursday)


Preamble #1 You have 4 glasses of water. In which cup

will a teabag dissolve the quickest? In which cup will an ice cube melt the fastest? In which cup will a ¼ teaspoon of salt dissolve the quickest? Rank the cups for each of those situations.

1. 300mL at 25 deg C 2. 300mL at 85 deg C 3. 50mL at 25 deg C 4. 50mL at 85 deg C


Concentration

Solute – What is dissolved (smaller) Solvent – What solute is dissolved in

(larger) Solution – mixture of solute and solvent Concentration = measure of how much

solute is dissolved into the solvent


Concentration

Types of Concentrations: Mass Percent = mass solute/mass solution

x 100% Molarity = mol solute/L solution Molality = kg solute/L solution Normality = # equivalents/L solution


Agenda FYI Concentration Preamble #2 Book/ID Handout

Tuesday, January 30, 2007

Concentration

Solute – What is dissolved (smaller) Solvent – What solute is dissolved in

(larger) Solution – mixture of solute and solvent Concentration = measure of how much

solute is dissolved into the solvent


Concentration

Types of Concentrations: Mass Percent = mass solute/mass solution

x 100% Molarity = mol solute/L solution Molality = kg solute/L solution Normality = # equivalents/L solution


Preamble #2 You have a sugar solution of a certain concentration (call this solution A). You pour 1/4 of this solution into a beaker, and add an equivalent volume of water (call this solution B)

1) What is the ratio of amount of sugar between A and B?2) What is the ratio of volumes between A and B?3) What is the ratio of concentrations between A and B?4) How much water would you add to A to create the concentration of B?


Preamble #2 (ctnd) Now, assume that solution A started with a volume of 155mL and 13g of glucose (C6H12O6) dissolved in it. Calculate the concentration of solution A and B in the following concentration types:

Mass percent Molarity Molality


Agenda FYI Preamble #2 Preamble #3 ID Handout Folders Salt Solubility Lab

Wednesday, January 31, 2007

Preamble #2 (ctnd) Now, assume that solution A started with a volume of 155mL and 13g of glucose (C6H12O6) dissolved in it. Calculate the concentration of solution A and B in the following concentration types:

Mass percent Molarity Molality


Preamble #3 What are some of your ideas/knowledge

about solubility, dissolving, and solutions? What are some of your questions about those topics?

How do you think volume and temperature will relate to the solubility of salt?


Salt Solubility Lab Add an entry to your table of contents

designating this lab. If you are reusing your notebook, draw

a thick line between semesters to help keep them separate

This lab will be completely in I saw/I thought


Agenda FYI Salt Solubility Lab

Friday, February 2, 2007

FYI’s Lab notebook 1/31 Wednesday Book Check 2/5 Monday Binder Check 2/5 Monday RLog 15 2/6 Tuesday Salt Solubility Lab 2/7 Wednesday


Salt Solubility Lab Finish up your data collection and start the

data analysis You will need to finish the data analysis by

the start of class on Monday Monday we will share class data and your

team will have a chance to discuss the extension questions (will require some outside research)

Lab is due on Wednesday


Agenda FYI Book Check Salt Solubility Lab Analysis

Monday, February 5, 2007

FYI’s Book Check 2/5 Monday Binder Check 2/5

Monday RLog 15 2/6 Tuesday

or 2/7 Wednesday

Salt Solubility Lab 2/8 Thursday


Lab Analysis Construct a whiteboard with your

team’s data in a data table and graph Include your determination of the best

fit line/curve for your data Also make a table of your molarities


Agenda FYI Binders Back RLog 15 Due Dilutions Preamble 4

Tuesday, February 6, 2007

FYI’s RLog 15 2/6 Tuesday

or 2/7 Wednesday

Salt Solubility Lab 2/8 Thursday

QP 15 (1-49 odd) 2/13 Tuesday RLog 16 2/20 Tuesday

Wednesday, February 7, 2007

DilutionWhen you add water to a solution, you

dilute it (ALWAYS decreases concentration) M1V1 = M2V2

M = concentration

V = volume Tip: Make sure your volumes are correct

(may have to add volumes together for V2)


Preamble 4 You need to make 535 mL of a sugar solution with

a concentration of 2.324 x 10 -3 M. However, you have solutions of various concentrations and volumes to start with. How much of each solution and water will you need to combine together? A) 1.1 L of 1M solution B) 300. mL of 2.2 x 10 -2 M solution C) 50. mL of 3M solution D) 66 mL of 1.32 x 10 -1 M solution


Agenda FYI Preamble 4 Peer Review of Lab Preamble 5

Thursday, February 8, 2007

FYI’s Salt Solubility Lab 2/8

Thursday QP 15 (1-49 odd) 2/13 Tuesday RLog 16 2/20 Tuesday


Peer Review On the next available page, write the name of the lab + Peer

Review at the top Space out the headings on the page

Procedure – clear, step by stepData collection – clear, all necessary data givenData Analysis – data table, graph, equation of line,

molaritiesGroup Analysis – data table/graph comparison between

sidesExtensions – 3 questions, check processConclusion – 3 paragraphs


Agenda FYI Preamble 5 Preamble 6



Monday QP 15 (1-49 odd) 2/13 Tuesday Each person needs to bring a sample of

juice (at least a cup) on 2/13 Tuesday RLog 16 2/20 Tuesday


Preamble 5 You mix 92g of a 23% by mass solution of Lead

(II) nitrate with 1.10L of a 2.00M solution of Potassium chloride. Your volume increases to 1.13L and a precipitate forms.

A. What is the balanced equation?B. What is the net ionic equation?C. What are the starting moles of the reactants?D. What is the limiting reagent?E. How much product will you make?F. What is the concentration of the remaining ions in the

solution?


Preamble 6 How would you make 1L of a 1.00 mg/mL solution

of Vitamin C (Ascorbic Acid = C6H8O6)?

Given the above solution, how would you make 100mL samples of the following concentrations: 0.8 mg/mL 0.7 mg/mL 0.6 mg/mL 0.5 mg/mL

0.4 mg/mL0.3 mg/mL0.2 mg/mL0.1 mg/mL


Agenda FYI Preamble 6 Sailin’ the High C’s



Monday QP 15 (1-49 odd) 2/13 Tuesday Each person needs to bring a sample of

juice (at least a cup) on 2/13 Tuesday RLog 16 2/20 Tuesday


Preamble 6 How would you make 1L of a 1.00 mg/mL solution

of Vitamin C (Ascorbic Acid = C6H8O6)?

Given the above solution, how would you make 100mL samples of the following concentrations: 0.8 mg/mL 0.7 mg/mL 0.6 mg/mL 0.5 mg/mL

0.4 mg/mL0.3 mg/mL0.2 mg/mL0.1 mg/mL


Sailin’ the High C’s Make a new entry in your table of

contents for the lab In your notebook, write out your I

saw/I thought for your background and procedure


Agenda FYI Sailin’ the High C’s


FYI’s Sailin the High C’s TODAY RLog 16 2/20 Tuesday QP 16 (1-49 odd) 3/2 Friday Garden Project 3/5 Monday

(look online) RLog 10/14 3/12 Monday


Sailin’ the High C’s Finish up your Questions/Analysis

in I saw I thought Finish your Conclusion in

paragraph form


Agenda FYI Preamble 7


FYI’s RLog 16 2/20 Tuesday Quiz 2/23 Friday QP 16 (1-49 odd) 3/2 Friday Garden Project 3/5 Monday

(look online) RLog 10/14 3/12 Monday


Preamble 7 10.0g of Silver nitrate is added to 55mL of a

1.1 x 10-2 M solution of sodium chloride. A product forms and volume increases to 62mL.

A) write the balanced equation

B) calculate the moles of reactants

C) find the limiting reagent D) find the mass of product formed

E) find the concentration of the remaining ions


Solutions Chemistry Lowell High School. Agenda FYI Introductions Preamble #1 Monday, January 29,...

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