Chemistry 9701 · AS & A Level · Chemical energetics

Chemical energetics — practice question

The reaction pathway diagram shown represents the decomposition reaction $\text{SF}_6(\text{g}) \rightarrow \text{SF}_4(\text{g}) + \text{F}_2(\text{g})$. What are the values of $\Delta H^\circ$ and $E_a$ for this reaction?

  • A$\Delta H^\circ = X$, $E_a = X + Y$
  • B$\Delta H^\circ = X$, $E_a = Y$
  • C$\Delta H^\circ = X - Y$, $E_a = X$
  • D$\Delta H^\circ = Y - X$, $E_a = X$

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