Title	: RATES OF REACTION III	

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

Apparatus : 
sulphuric acid , magnesium ribbon , water , test tubes , beaker , 
Bunsen burner , tripod stand , thermometer , stop watch

Directions : 
Cut a strip of magnesium into 2 cm strips . To six test tubes add 30 ml 
of acid . Heat the beaker of water to boiling and as it cools to room 
temperature add a tube of acid at various temperature ranges . When the 
tube is added measure the temperature of the acid not the water bath . 
At the desired temperature range add a strip of magnesium and start a watch
record the time taken for the magnesium to completely disappear . 
The temperature range should be : 90 , 75 , 60 , 45 , 35 , room temp.

Questions  : 
How does temperature affect the rate of reaction ? Please give a suitable 
explanation based on the results you have obtained from the experiment. 
Plot a graph of the results .
From the graph estimate the time it would take to complete the rate of 
reaction at 80 , 66 , 50 degrees .
Using suitable values calculate the average rate of reaction .

Criteria    : ANALYSIS AND INTERPRETATION

Discussion of Results 	- 5 mks
Graph 			- 4 mks
Calculation of the Rate - 1 mk