Investigate the effect of potato on hydrogen peroxide

Artie Prajapati Biology

Investigate the effect of potato on hydrogen peroxide

Aim; is to investigate whether potato with increased surface area, can change the reaction time of hydrogen peroxide breaking down into H2O2.

Prediction; I predict that by separating a potato into smaller pieces, it will provide an increased surface area for the catalyse in the potato to collide with the hydrogen peroxide which will therefore allow it to break up into hydrogen and oxygen much faster. Potatoes contains enzymes called catalyse. Enzymes speed up the reaction process and I can prove this by using a control in my experiment, as the air contains no catalyse, therefore there will be little or no froth in the hydrogen peroxide control. I know that increasing the surface area of the potato will speed up the reaction because in the emulsification of fat, bile is added into the small intestines to break up the fat pieces into fat droplets, which therefore speeds up the emulsification process because the enzyme lipase now has an increased surface area to digest than before the bile was added.

I will conduct this experiment by using the following apparatus:

6” ruler, Digital stop clock,

6 boiling tubes, A pipette,

Measuring cylinder, SAFTEY GOGGLES,

Test tube rack, Small knife, paper towels,

Electronic scales, hydrogen peroxide,

One large potato and an apple corer.

Plan

Firstly place the boiling tube into a test tube rack, then measure out the hydrogen peroxide using a measuring cylinder and place carefully in a boiling tube, making sure you measure from the bottom of the curve. Next measure the same amount again and place in a boiling tube for my control. ...