Titration!

In today's class we were entertained not only by Mr.Holowka with the projector, but we also got to see an example of Titration done by Mr.Doktor!!

To see Images of the Titration example Mr.Doktor did in class today go to the links below.

http://imgur.com/GeomZ

http://imgur.com/IzM70

Here are some of the tools that Mr.Doktor used today in class to do the titration process:

These are Burets.

This is an Elenmeyer Flask.

Make sure you know the definition of a Meniscus and make sure you use it during a titration experiment.

Meniscus- the curved upper surface of a liquid in a tube/container.

Example:

John completed a titration of 0.471 M NaOH with 18ml samples of HI of unkown concentration. Here is the data he gathered. Determine the concentration of HI.

Trial 1 2 3 4

Final(ml) 11.9 22.8 34.2 43.1

Initial(ml) 0.7 11.9 22.8 34.2

Volume 11.2 10.9 11.4 8.9(do not include this one)

reading

Find the average of the Volume readings which in this case is 11.6ml

Write the balanced equation. NaOH + HI -----> NaI + HOH

Then Calculate.

0.471 Mol/L x 11.6ml x 1/1= 5.4636mmol

5.4636mmol/18ml =0.3035M=0.304M

Here is a diagram of a Titration.

Here is a very detailed video of the experiment and calculations: