Titrations

Titration is used to find the concentration of known solution. 

However before you start titrating you need to know a few terms.

buret- has known solution

stopcock- valve used to control flow of solution from buret

pipet- measures volume of unknown solution

Erlenmeyer flask- container for unknown solution

indicator- identifies the point of titration

stock solution- the known solution

Now how to do titration

For example find 10mL of  [BaOH] titration with .3 M of HI
first you will have a graph that looks like this...

Now as nice as a graph as this is you need to know what it means before you do anything. After filling up your buret you will write the volume in the initial reading spot. you will then open the stopcock and let the known solution pour into the unknown solution until you have a reaction. After the reaction occurs you will record the final reading and then find the volume used with the difference found between the final and initial reading. You continue this for all the trials and you will end up with a graph that looks something like this.

See how it was done. After this you find the average amount of volume used (however since 9.6 looks like a mistake was made in the process of titration, I will leave it out in order to get a more accurate result). 

Thus the average is 10.2 mL or .0102 L.

You now have the M of HI, the average volume of HI and the volume of BaOH, you can now find the concentration of BaOH.

Here's what the equation looks like

0.3mol/1L x .0102L/1 x 1/1 x 1/.01L =3.06x10^-5 mol/L