For the Equilibrium PCl₅(g) $\rightleftharpoons$ PCl₃(g) + Cl₂(g), K_c = 2

question 62

Multiple Choice

For the equilibrium PCl₅(g) $\rightleftharpoons$ PCl₃(g) + Cl₂(g) , K_c = 2.0 × 10¹ at 240°C. If pure PCl₅ is placed in a 1.00-L container and allowed to come to equilibrium, and the equilibrium concentration of PCl₃(g) is 0.50 M, what is the equilibrium concentration of PCl₅(g) ?

• A) 1 M
• B) 0.25 M
• C) 0.025 M
• D) 0.012 M
• E) 6.3 M

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Definitions:

Explosion

A sudden and violent release of energy that results in a rapid increase in volume and release of gases, often accompanied by heat, light, and sound.

Energy

The quantitative property that must be transferred to an object in order to perform work on, or to heat, the object.

PETN

Pentaerythritol tetranitrate, a high explosive compound used in a variety of military, industrial, and mining applications.

Pentaerythritol Tetranitrate

An explosive compound better known as PETN, used both in military and industrial applications, with a formula of C5H8N4O12.