Chemistry Practice Problems Equilibrium Expressions Practice Problems Solution: Consider this reaction.P4 (s) + 6 Cl2 (g) ⇌ 4 PCl3...

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Solution: Consider this reaction.P4 (s) + 6 Cl2 (g) ⇌ 4 PCl3 (g)What is the correct Kc expression for this reaction?  

Problem

Consider this reaction.

P(s) + 6 Cl(g) ⇌ 4 PCl(g)

What is the correct Kc expression for this reaction?

 

 

Solution

Kc is the equilibrium expression of the concentrations in the reaction. The general form of an equilibrium expression is:

Given reaction:

P4(s)  +  6 Cl2(g)  ⇌  4 PCl3(g)
       (reactants)                  (products)


When writing equilibrium expressions:

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