Yr11 Lesson1

Stoichiometry

Ms Alexander(sarah.alexander@wesleycollege.net)

We have a problem...

I need to know the exact amount of acid or base in a substance

What is the reaction?

Can I describe it in words?

What is the reaction equation?

Is it balanced?

Moles

What are the mole ratios?

n(want)n(got)

What information do we have?

Concentration of the standard solution

What do we need to determine?

Concentration of the unknown solution

An unknown solution might be for exampleRiver water sample

Food sample

What tools can we use?

Equations? What ones do we know?

Titration? What is this?

What information will it provide?

Titration

A type of volumetric analysis where we determine the concentration of an

unknown solution by reacting with a solution of known concentration.

What equipment does titration use?

Burette

Pipette

Volumetric Flask

Conical Flask

Set Up of Titration

Safety

Glass

This lesson...

Titration overviewIntroduction to EEI

MSDS Activity

Homework

Collecting the Volumetric analysis Pipetting Technique sheet