**Stoichiometry of Soltuions**

Table of Contents

Date Lecture/Activity Pg#

Objective:

I will use stoichiometry to determine the concentration of solutions in units of molarity

Agenda:

Lemonade Concentration Lab

Stoich - volume

Chemcatalyst:

What is the molarity of a solution that has 20.43 g of CaCO3 in 200 mL of water?

Conversion Chart

Mass (g)

Moles

Atoms, Particles, molecules

Liters of Solution

Molar Mass

Avogadro's #

Molarity (mol/L)

Mass to Volume Steps

Step 1: Write a BALANCED EQUATION

Step 2: Convert Known from mass to moles (molar mass)

Step 3: Determine the mole ratio to convert from moles of Known to moles of Unknown

Step 4: Convert the Unknown substance from moles to volume in liters (molarity)

Template

Mass known

(g)

1 mol known

molar mass

known (g)

1 Liter

# moles

Molarity

What volume of a 0.5M NiSO4 solution is produced from 5g of Ni?

Practice Problems

Ni + FeSO4

--> Fe + NiSO4

Volume - Mass Steps

Step 1: Write a BALANCED EQUATION

Step 2: Convert Known substance from volume in liters to moles (Molarity)

Step 3: Determine the mole ratio to convert from moles of Known to moles of Unknown

Step 4: Convert the Known substance from moles to mass (Molar Mass)

Template

Known

Volume (L)

# moles

known

1 Liter

Molar Mass

known (g)

1 mol known

Practice Problem

What mass of Al is produced from 5L of a 0.50M AlCl3 solution?

2AlCl3 --> 2Al + 3Cl2

Volume - Volume Steps

Step 1: Write a BALANCED EQUATION

Step 2: Convert Known substance from volume in liters to moles (molarity)

Step 3: Determine the mole ratio to convert from moles of Known to moles of Unknown

Step 4: Convert the Unknown substance from moles to volume in liters (molarity)

Template

Known

Volume (L)

# moles Known

1 liter known

unknown

moles

known moles

1 liter of

unknown

# moles unknown

mole ratio

Practice Problem

What volume of a .30M Al is produced from 5L of a 0.50M AlCl3 solution?

2AlCl3 --> 2Al + 3Cl2

22. 04/08/14 Stoich of Solutions 27

unkown

mole

known

mol

unkown

mole

known

mol

Table of contents

Date Title Pg#

02/09/16 Solution Stoich

Today I will use the conversion factor of molarity so that I can calculate stoichiometric problems for solutions.

Agenda;

Solution Stoichiometry - Lecture

Chemcatalyst:

Predict the products and Identify any precipitates formed:

NaCl + Ba(OH)2 -->

AgNO3 + KBr -->