rate of reaction experiment

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6 Terms

1
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experiment set up

to monitor the rate of production of oxygen from hydrogen peroxide using mangones dioxide as a catalyst

<p>to monitor the rate of production of oxygen from hydrogen peroxide using mangones dioxide as a catalyst</p>
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chemical equation

H2O2 —MnO2—> H2O + 1/2O2

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manganese dioxide

a black powder that acts as a catalyst to speed up the decomposition of the hydrogen peroxide

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steps for the experiment

  1. dilute hydrogen peroxide is placed in a conical flask

  2. delivery tube is connected to an inverted graduated cylinder filled with water and standing on a basin of water

  3. a small amount of manganese dioxide is quickly added to the hydrogen peroxide in conical flask and it is stoppered immediately. shake the conical flask and start the timer

  4. the volume of gas (oxygen) in the graduated cylinder is measured at regular intervals

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graphing

oxygen: y axis

time: x axis

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average rate

total volume of oxygen given off (cm3)

divided by total time for reaction to go to completion (min)