OBJECTIVE, GRAPH and TABLE RESULT

23/02/2015 21:39

Objective – To investigate the relationship between the molality and the boiling point of a solution.

1.     In each of the 6 test tubes, measure 5.0 g acetone.

2.     Leaving one of the test tubes, add 0.4, 0.8, 1.2, 1.6 and 2.0 g of benzioic acid.

3.     Stir the solutions to ensure all the benzoic acid has dissolved.

4.     What are the molalities of each solution:

g/mol of acetone (CH3)2CO = 58, 08
 

0 g benzoic acid in 5 g acetone –  

n = 0/ 58,08 = 0

M= 0/ 0.005 = 0

0.5 g benzoic acid in 5 g acetone -

n = 0,5/ 58, 08 = 0.009

M = 0,009/5

1.0 g benzoic acid in 5 g acetone -

 

1.5 g benzoic acid in 5 g acetone -

 

2.0 g benzoic acid in 5 g acetone –

 

2.5 g benzoic acid in 5 g acetone -

TABLE RESULT

GRAPH: