Hydrogen Peroxide Decomposition Lab Report
Objective: By utilising the catalyst of potassium iodide to trigger a decomposition reaction in hydrogen peroxide, how will fluctuation in temperatures will affect the decomposition rate?
Hypothesis: Due to the decomposition effect of potassium iodide on hydrogen peroxide, the increased temperature applied will also increase the decomposition rate, because of the more occurrences of collisions which causes the more energy to be produced.
Independent variable: Temperature of H2O2
Dependent Variable: Rate of Decomposition in H2O2
Constant Variables:
Controlled Variable
How/why variable will be controlled.
Amount of H2O2
The variable will be controlled by measuring out only 5 mL of H202 per trial, this is because if there were fluctuating amounts of H2O2 from trial to trial, it would not be a fair test.
Amount of KI
This variable will be …show more content…
When the potassium iodide was added to the hydrogen peroxide, the reaction started it became colored into a golden yellow with a slim layer of bubbles on the meniscus of the mixture of hydrogen peroxide and potassium iodide. This imagery was consistent throughout all of the trials.
Test 2 (room temperature): When the hydrogen peroxide was poured into the test tube there were no signs of bubbles or color change from being room temperature which was expected. When the potassium iodide was added there was a more prominent coloration of golden yellow due to the reaction. As the reaction carried on small amounts of precipitate began accumulating on the sides of the test tube along with a slightly larger amount of bubbles compared to Test 1 being formed on top of the reaction. Imagery was mostly consistent throughout the trials, excluding fluctuations in the amount of precipitate and bubbles
Objective: By utilising the catalyst of potassium iodide to trigger a decomposition reaction in hydrogen peroxide, how will fluctuation in temperatures will affect the decomposition rate?
Hypothesis: Due to the decomposition effect of potassium iodide on hydrogen peroxide, the increased temperature applied will also increase the decomposition rate, because of the more occurrences of collisions which causes the more energy to be produced.
Independent variable: Temperature of H2O2
Dependent Variable: Rate of Decomposition in H2O2
Constant Variables:
Controlled Variable
How/why variable will be controlled.
Amount of H2O2
The variable will be controlled by measuring out only 5 mL of H202 per trial, this is because if there were fluctuating amounts of H2O2 from trial to trial, it would not be a fair test.
Amount of KI
This variable will be …show more content…
When the potassium iodide was added to the hydrogen peroxide, the reaction started it became colored into a golden yellow with a slim layer of bubbles on the meniscus of the mixture of hydrogen peroxide and potassium iodide. This imagery was consistent throughout all of the trials.
Test 2 (room temperature): When the hydrogen peroxide was poured into the test tube there were no signs of bubbles or color change from being room temperature which was expected. When the potassium iodide was added there was a more prominent coloration of golden yellow due to the reaction. As the reaction carried on small amounts of precipitate began accumulating on the sides of the test tube along with a slightly larger amount of bubbles compared to Test 1 being formed on top of the reaction. Imagery was mostly consistent throughout the trials, excluding fluctuations in the amount of precipitate and bubbles