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

question 37

Multiple Choice

Solid mercury(II) oxide decomposes when heated to produce liquid mercury and oxygen.
2HgO(s) $\leftrightarrows$ 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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Definitions:

BCD Value

Binary-Coded Decimal representation, a method of storing numbers where each digit is represented by its own binary sequence, commonly used in digital systems.

Thumbwheel Switch

A mechanical input device used to input numerical data, often found in industrial control systems, allowing the user to rotate a wheel to select numbers.

Setting

The configuration or adjustment of parameters or conditions within a system or device to achieve desired operation or output.

Masked Move Instruction

A programming command used to selectively transfer bits from one word to another using a mask.