Answer to Question #179898 in General Chemistry for Nesha

Question

To determine the most efficient catalyst that decomposes hydrogen peroxide using KI, FeCl3 and PbO2. list two source of error and limitations in this rate of reaction? Thanks in advance

Answer 1

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$\bull$ the most efficient catalyst that decomposes hydrogen peroxide using KI, FeCl3 and PbO2.

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$\bull$ As an interesting contrast,

a similar increase in the rate of decomposition of hydrogen peroxide can be achieved using

$\bull$ an inorganic catalyst such as

$\bull$ manganese(IV) oxide

or

$\bull$ lead(lV) oxide.

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$\bull$ The catalytic decomposition of hydrogen peroxide occurs when administered to wounds.

$\bull$ Catalase, an enzyme in the blood, catalyzes the reaction.

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$\bull$ The decomposition reaction of hydrogen peroxide was found to be first-order,

$\bull$ as reported by most of the previous researchers. It was found that,

$\bull$ at an initial temperature of 67 °C, the decomposition of pure peroxide in dilute sulfuric acid had a rate constant of 0.0385 min^–1.

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$\bull$ A catalyst makes the decompostition reaction of hydrogen peroxide faster because

$\bull$ it provides an alternative pathway with a lower activation energy for the reaction to take.

$\bull$ When a catalyst is added,

an alternative pathway through which the reaction can form water and oxygen gas is introduced.