Catalase speeds up the decomposition of hydrogen peroxide.
H2O2 → 2 H2O + O2
Enzyme: Catalase in potato cubes
Substrate: Hydrogen peroxide
Product: Oxygen gas that causes the potato cubes to float
Aim: To find the effect of pH on enzyme (catalase) activity
Method: Measure time recorded for the potato cubes to float at different pH
At optimum pH, the catalase is most active.
Rate of decomposition of hydrogen peroxide is the fastest. Rate of production of oxygen is the fastest.
The oxygen gas produced will caused the potato cube to float to the top of the mixture at the fastest rate.
At extreme pH, the catalase is denatured.
Rate of decomposition of hydrogen peroxide is the slowest. Rate of production of oxygen is the slowest.
The oxygen gas produced will caused the potato cube to float to the top of the mixture at the slowest rate.