The aim of our experiment was to find out the molar mass of the lithium sample and compare the molar mass to the actual molar mass of lithium from the periodic table.

Authors Avatar

Thomas Bishop                                                                                                            IB13VF

Chemistry Write up # 4:                

Molar mass of lithium

Table showing masses and measurements of chemicals in the experiment

Observations:

  • There was a grey layer on the outside of the lithium which was the Lithium that had already reacted with oxygen to form lithium oxide.
  • Some gas escaped in the time it took to put the lid on after adding the lithium to the water.
  • The Lithium fizzed slightly when put in the 100ml of H2O.        
  • While titrating the indicator change the lithium hydroxide blue and when titrated with the HCl the solution turned clear.
  • There was no smell throughout the experiment.

Titration raw data

Join now!

Calculations for water displacement:

2Li (s)    +    2H2O (aq)                2 LiOH(aq)  +       H2 (g)

Titration

Conclusion:

The aim of our experiment was to find out the molar mass of the lithium sample and compare the molar mass to the actual molar mass of lithium from the periodic table. The periodic table states the molar mass of lithium is 6.941. From the water displacement method the molar masses that we obtained from ...

This is a preview of the whole essay