Experiment 1

Aim : To determine the effect of temperature on the rate of reaction

Apparatus : 250 ml beaker , thermometer , Bunsen burner , tripod stand , 
boiling tubes measuring cylinder , ruler , magnesium ribbon , sulphuric acid 
stopwatch

Method :

Measure 20ml of the acid in 5 boiling tubes . Cut a piece of Magnesium ribbon 
into strips of 2 cm . Place a beaker of water to boil ( this is a water bath ) .
When the water boils turn off the flame and place one of the tubes in the bath . 
Record the maintained temperature of the acid .
Add a strip of magnesium and record the time taken for the magnesium to disappear . 
Allow the water bath to drop 15 to 20 degrees and repeat . Continue to room temperature .

Discussion :
What are the manipulated and controlled variables ? 
How does the rate vary with temperature ? Why ?
Was this method appropriate ?
Any errors ? Any ways of improvement ?
From the graph can you determine the rate constant ?


Criteria    : ANALYSIS AND INTERPRETATION

Analysis and Interpretation

Explanations - 	7 mks
Conclusion - 	2 mks
Graph - 		3 mks