To investigate the effect of surface area on the rate of reaction using the enzyme Catalase, found in potato, and the substrate Hydrogen Peroxide.

Hydrogen peroxide has an acidic pH which will break down into water which has a neutral pH. This may effect the enzyme action as many enzymes work faster in a neutral environment, the only control over this is the fact that it will happen in each test and to consider its effect at the end of the experiment. I will need to use the same potato and cut a fresh chip at each stage of …

…Each rounded to a whole number r = 5mm d = 10mm l = 40mm p = 3.14... New surface area exposed by each cut = 157.1mm2 2pr2 + 2rl (+2pr2) (+2pr2).... 1st chip formula = 2pr2 + 2rl = 2p25+400 = 1414mm2 2nd chip formula = 1st chip surface area + 2pr2 = 1414mm2 + 157.1= 1571 mm2 3rd chip formula = 2nd chip surface area + 2pr2 = 1571+ 157.1 = 1728 mm2 4th chip formula = 3rd chip surface area + 2pr2 = 1728 + 157.1 = 1885 mm2 5th chip formula = 4th chip surface area + 2pr2 = 1885 + 157.1 = 2042 mm2 6th chip formula = 5th chip surface ...