Solid Mercury(II) Oxide Decomposes When Heated to Produce Liquid Mercury

question 42

Multiple Choice

Solid mercury(II) oxide decomposes when heated to produce liquid mercury and oxygen. 2HgO(s) 2Hg(l)  O₂(g)
An amount of mercury(II) oxide is placed in a vessel at a particular temperature and allowed to reach equilibrium. How could the amount of liquid mercury in the vessel be increased?
I. adding more mercury(II) oxide
II. removing some oxygen
III. increasing the volume of the vessel

• A)I only
• B)II only
• C)III only
• D)I and II
• E)II and III

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