The graph below represents the energy changes over the course of a chemical reaction

Give the magnitude and sign of the ΔH for the forward reaction in kJ/mol–.
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Give the activation energy for the reverse reaction in kJ mol–1.
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Give two reasons explaining why the rate of this reaction increases with increasing temperature.
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A suitable catalyst is discovered for the reaction. What would be the likely effect of the catalyst on:
- the activation energy? Explain your answer.
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- the ΔH? Explain your answer.
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