Phosphorous Trichloride and Phosphorous Pentachloride Equilibrate in the Presence of Molecular

question 83

Multiple Choice

Phosphorous trichloride and phosphorous pentachloride equilibrate in the presence of molecular chlorine according to the reaction: PCl₃ (g) + Cl₂ (g) → PCl₅ (g)
An equilibrium mixture at 450 K contains
P_PCl3 = 0.224 atm,
P_Cl2 = 0.284 atm, and
P_PCl5 = 4.24 atm. What is the value of K_p at this temperature?

• A)66.7
• B)1.50 × 10^-2
• C)2.70 × 10^-1
• D)3.74
• E)8.36

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Definitions:

Chemical Reaction

A process in which substances interact, leading to the formation of new substances with different properties.

Molecular Bonds

Molecular bonds are attractive forces that hold atoms together in molecules, including ionic, covalent, and hydrogen bonds among others.

Reactants

are substances initially present in a chemical reaction that are consumed during the reaction to make products.

Products

Substances formed as a result of a chemical reaction, found on the right side of a chemical equation.