The Equilibrium Constant, Keq

Consider the following balanced chemical equation:

N_2(g) + 3 H_2(g) ⇌ 2 NH_3(g)

Which of the following is the correct expression for the equilibrium constant, Keq?

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• 
• 
• 

Consider the following equilibrium reaction: CaCO3(s) ⇌ Ca2+(aq) + CO32−(aq) Which of the following is the correct expression for the equilibrium constant, Keq?

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For each of the following equilibrium systems, match the equation and its Keq value to the appropriate label.

• reactants are favored

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• products are favored

• 
• equally favored

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At equilibrium, the following concentrations are measured for this reaction:

A_(g) + 2 B_(g) ⇌ C_(g)

[A] = 0.50 M

[B] = 0.20 M

[C] = 0.10 M

What is the value of the equilibrium constant, Keq​, for this reaction?

• 1.0

• 5.0

• 0.20

• 2.0

For the following equilibrium: SO_2(g) + NO_2(g) ⇌ SO_3(g) + NO_(g)

The equilibrium constant is 4.00.

At equilibrium, the following concentrations are measured.

[SO₂] = 0.60 M ; [NO₂] = 0.20 M ; [SO₃] = 0.30 M

What is the equilibrium concentration of NO?

• 0.10 M

• 0.40 M

• 0.60 M

• 0.15 M