Which of the Following Expressions Is the Correct Equilibrium-Constant Expression

question 1

Multiple Choice

Which of the following expressions is the correct equilibrium-constant expression for the equilibrium between dinitrogen tetroxide and nitrogen dioxide?
N₂O₄ (g) 2NO₂ (g)

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Definitions:

Conglomerate

A coarse-grained clastic sedimentary rock composed of rounded to sub-rounded clasts (pebbles, cobbles, and boulders) in a fine-grained matrix of sand and mud.

Breccia

A rock composed of large, angular fragments; typically formed in sedimentary environments, but can be formed by volcanic, hydrothermal, or tectonic processes.

Sandstone

A sedimentary rock formed by the consolidation and compaction of sand and held together by a natural cement, such as silica.

Cement

1. A natural material precipitated in the pore spaces between grains, helping to hold the grains together. 2. A processed, whitish powder, typically derived from calcium carbonate, that sets to a solid mass when mixed with water and usually other materials.