This energy diagram is for the thermal decomposition of solid mercury (II) oxide (also known as mercuric oxide) into liquid mercury and oxygen gas.
http://tinypic.com/r/r1jy8l/8

• Write a balanced equation for the reaction.
• Explain what feature is shown by the arrow labeled (a).
• Using chemical symbols and dashed lines (this can be done with type), draw what the activated complex or transition state might look like.
• Is this reaction exothermic or endothermic? Explain.

Question

This energy diagram is for the thermal decomposition of solid mercury (II) oxide (also known as mercuric oxide) into liquid mercury and oxygen gas.
 http://tinypic.com/r/r1jy8l/8

•	Write a balanced equation for the reaction.
•	Explain what feature is shown by the arrow labeled (a).
•	Using chemical symbols and dashed lines (this can be done with type), draw what the activated complex or transition state might look like.
•	Is this reaction exothermic or endothermic? Explain.

anonymous · Answer

1)  2HgO ------> 2Hg  +  O2
2)  (a) Arrow show the difference between the energy of activated complex and energy of reactants.
3)  .........Sorry here is confusion
4) It is endothermic reaction, because Graph show that the energy of product is greater than reactants, which mean reactants got energy by heating during the reaction, due to whic energy of products is high, so reaction is endothermic.