In this experiment I will be using three methods to determine the relative atomic mass of lithium. The three methods are, first by adding water to lithium, then measuring the amount of hydrogen given off and finally using stoichiometry appropriately to find out the relative atomic mass of lithium. The second method would be to titrate; therefore neutralise 25 cm of lithium hydroxide from that produced in method 1 with HCl, using an indictor to know when the reaction has being completed and finally using stoichiometry appropriately to find out the relative atomic mass of lithium. Health & Safety...
obvious. The only way to this is by first opening the burette tap fully then as soon as a small colour change as been seen, the tap should be closed slightly, so that only drops of the acid are coming through and the point when all the colour of the solution changes could be seen more clearly. Conclusion In this experiment I was using two methods to find the relative atomic mass of Lithium and method 2 was the most accurate one has I found out an answer of 8.3, which is 1.4 greater than the Ar or lithium.