urgent not plagiarism1. This energy diagram is for the thermal decomposition of solid mercury (II) oxide (also known as mercuric
oxide) into liquid mercury and oxygen gas.

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.
2. The diagram below shows steps in the exothermic chemical reaction of bromomethane with
hydroxide to form methanol and bromide ion. The black spheres are carbon atoms, the white spheres
are hydrogen atoms, the red spheres are oxygen atoms, and the blue dots are bromine atoms.

Write a balanced chemical equation to represent the reaction.

Using the figures in the diagram, draw the steps of the reaction in the correct order, label each
molecule in the drawings, and describe what is happening in the reaction.

Draw an energy diagram of the reaction in which you label the energies of each step in the
reaction and the activation energy.
3. This graph shows the rates of reaction in a chemical reaction with and without the addition of an

Explain the shape of each line. What is happening to the reaction rate as the reactant
is changed?

Explain what the enzyme appears to be doing.

Why does the curve of the reaction with enzyme flatten out?
4. Draw an energy diagram for an endothermic reaction without a catalyst (use a solid line) and with
a catalyst (use a dotted line). Label all parts of the diagram. Explain what a catalyst is and how a
catalyst influences the rate of a reaction.

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