The variable in this reaction is the substance used as a catalyst in the decomposition of an
aqueous solution of hydrogen peroxide. Set up the burette filled with water as in a standard
water displacement experiment. 2 mL of 20-volume hydrogen peroxide will give enough
oxygen almost to fill the burette. Weigh out 1 g each of copper (II) oxide, nickel oxide,
manganese (lV) oxide and zinc oxide. Put 50 mL of water in the flask and add 2 mL of
hydrogen peroxide solution. Add the 1 g of copper oxide. Immediately insert the bung with
the delivery tube into the flask. Time the volume of oxygen given off at intervals of 15
seconds. Plot the volume of oxygen produced every 15 seconds against the time of the
reaction. Repeat the experiment using the other oxides as catalysts. Plot a graph for each
experiment. Manganese (IV) oxide is usually used as a catalyst in this reaction. The catalyst
is not used up during the reaction. A catalyst may slow down a reaction as well as speed it
up.
sharon kalunda answered the question on April 12, 2019 at 09:20
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Describe an experiment to show how temperature affects the rate of a chemical reaction.
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Describe an experiment to show how temperature affects the rate of a chemical reaction.
Date posted:
April 12, 2019
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Describe an experiment to show that the rate of a reaction depends on the concentration of the react(s).
Date posted:
April 12, 2019
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April 12, 2019
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Describe an experiment to show that there is electrical energy produced by chemical reactions.
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April 12, 2019
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Describe an experiment that can be used to determine the heat of displacement of copper.
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April 12, 2019
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Describe an experiment that can be used to determine the heat of neutralization of a chemical reaction.
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April 12, 2019
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April 12, 2019
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April 12, 2019
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April 12, 2019
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April 12, 2019
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Describe how magnesium metal reacts with carbon dioxide.
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April 12, 2019
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Explain potassium permanganate is reduced by sulphur dioxide.
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April 12, 2019
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April 12, 2019
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Describe an experiment to show how hydrogen is displaced from acids by different metals.
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April 12, 2019
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April 12, 2019
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Describe an experiment to show how copper is displaced from aqueous solution of copper ions.
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April 12, 2019
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April 12, 2019
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April 12, 2019
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April 12, 2019
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Describe how electrolysis is used to determine the salts which conduct electricity in solution form.
Date posted:
April 12, 2019
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