Question 1
Determine the activation energy (Ea) of the forward reaction.
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Chemistry · Unit 2 · Rates of chemical reactions · Rates of reactions
Describe activation energy (Ea).
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Question 2
Which statement correctly describes activation energy in a chemical reaction?
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Question 3
A student investigates the energy changes during the decomposition of hydrogen peroxide using manganese dioxide as a catalyst. The activation energy for the uncatalysed reaction is 75 kJ mol⁻¹, and for the catalysed reaction it is 58 kJ mol⁻¹. Describe what is meant by activation energy (Eₐ) in terms of the energy required for this reaction to occur.
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Calculate the rate of chemical reactions by measuring the rate of formation of products or the depletion of reactants. (Formula: rate of reaction = increase in product concentration (∆[P]) time taken or decrease in reactant concentration (−∆[R]) time taken)
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