CHEMISTRY EXAM 2 - CH 13-15

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If Kp is the equilibrium constant for the reaction

2 A (g) + B (g) ⇌ 3 C (g).

What is the equilibrium constant (in terms of Kp) for the reaction

6 A (g) + 3 B (g) ⇌ 9 C (g)?

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Which of the following is the correct expression for the concentration based equilibrium constant for the reaction:

Mg(OH)₂ (s) ⇌ Mg²⁺ (aq) + 2 OH⁻ (aq)

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Which of the following is the correct expression for the pressure based equilibrium constant for the reaction: 4 NH₃ (g) + 7 O₂ (g) ⇌ 4 NO₂ (g) + 6 H₂O (g)

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For the reaction below, the concentration of HI is 0.210 M and the concentrations of H₂, and I₂ are both 0.564 M. What must happen for the reaction to reach equilibrium?

2 HI (g) ⇌ H₂ (g) + I₂ (g) Kc = 7.21

Picture shown- is how you should write out your work to check

• The reaction needs to shift in the forward direction.

• The reaction needs to shift in the reverse direction.

• The reaction is already at equilibrium and no shift needs to take place.

• There is not enough information to determine how the reaction will reach equilibrium.

Construct the expression for Kp for the following reaction.
CH₄(g) + CO₂(g) ⇌ 2 CO(g) + 2 H₂(g)

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Construct the expression for Kp for the following reaction.

C(s) + 2 Cl₂(g) ⇌ CCl₄(g)

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