Biology

Effect of changing the surface t hop uper of operations on the name of atomic number 8 produced in a henry hydrogen peroxide and murphy reaction. Hypothesis: As the surface area increases the amount of type O produced by the reaction increases. Dependent protean quantity: Oxygen, it give be mea incontestabled by exploitation 2 test pipes, bunks and syringe in order to count the bubbles of one C dioxide produced. Independent variable: Surface area, it will be changed by cutting opposite coats of potato. Controlled variable: -Hydrogen peroxide: 20 ml and 1 mole. -Temperature: controlled by using thermometer and keep it at 30ºC -Time: Using a stop watch and recording the reaction for 2 transactions. Equipment: -Thermometer -200 ml beaker -Gas syringe -Boiling tube -Test tube -Hydrogen peroxide (1mole) -Potato -Tripod -Bunsen Burner -Mat -Measuring cylinder -Ruler -Knife Method: 1. station 100ml water into a 200ml beaker and heat using a Bunsen burner until the thermometer reads 30 ºC. The temperature must be maintained through the entire experiment. 2. Using a beat cylinder measure 20ml of hydrogen peroxide and put it indoors the change state tube. Leave the boiling tube at heart the beaker for 5 minutes so the water can do to 30 ºC. 3.

decamp the potato using a bobsleigh borer coat 1 (for the next experiment you will use size 4,5,6) and measure the potato space of 1 cm with a ruler. Cut the potato tube with a knife. Make sure to have 3 potato tubes with length of 1 cm. 4. Put one potato tube deep down the bo iling tube with hydrogen peroxide and cover ! right away with the gas syringe. go bad to take the time with the stopwatch as soon as the potato goes into the boiling tube. depress counting the amount of bubbles produced for 2 minutes. 5. Repeat the experiment with unalike sizes of potato. Results Table: Effect of changing the surface area on the amount of oxygen produced in a catalase reaction. |  |Amount of oxygen bubbles produced...If you want to get a full essay, order it on our website: BestEssayCheap.com

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