Equilibrium Constant

If the equilibrium constant is much greater than one (K >> 1) then

• Equilibrium is not established.

• Equilibrium lies to the right (products are favored)

• Equilibrium lies to the left (reactants are favored)

• Neither products or reactants are favored.

What is the equilibrium-constant expression for CO₂(g) + H₂(g) ↔ CO(g) + H₂O(l)

• K_c= [CO][H₂O] / [CO₂][H₂]  

• K_c= [CO₂][H₂] / [CO]

• K_c= [CO₂][H₂] / [CO][H₂O]

• K_c= [CO] / [CO₂][H₂]  

What is the K_eq expression for this reaction?

• K_eq = [NO₂]² / [NO]² [O₂]

• K_eq = [NO]² [O₂] / [NO₂]²

• K_eq = [NO]² [O₂] [NO₂]²

• K_eq = [NO₂]² / [NO]² + [O₂]

What is the equilibrium expression for: Fe₃O₄(s) + 4H₂(g) <=> 3Fe(s) + 4H₂O(g) K_eq =

• [Fe]³ [H₂O]⁴ / [Fe₃O₄] [H₂₄

• [Fe₃O₄] [H₂]⁴ / [Fe]³ [H₂O]⁴

• [H₂O]⁴ / [H₂]⁴

• [Fe] [H₂O] / [Fe₃O₄] [H₂]

Tags

NGSS.HS-PS1-6

An analysis of the concentrations at equilibrium in a 1 L flask yields the following results: [NOCl] = 0.30, [NO] = 1.2, and [Cl₂] = 0.60 Calculate the equilibrium constant for the following reaction: 2 NOCl_(g) ↔ 2 NO_(g) + Cl_2(g)

What is the K_c expression for this reaction?
   2 NO_(g)  +  O_2(g) ⇌  2 NO_2(g)

• K_c = [NO₂]² / [NO]² [O₂]

• K_c =  [NO]² [O₂] / [NO₂]²

• K_c = [NO]² [O₂] [NO₂]²

• K_c = [NO₂]² / [NO]² +  [O₂]

Find the K_c for
2NOBr(g) + Cl₂(g) ↔ 2NO(g) + 2BrCl(g)
 if 
2NOBr(g) ↔ 2NO(g) + Br₂(g)
has a K_c = 0.014
Br2(g) + Cl2(g) ↔ 2BrCl(g)
has a K_c = 7.2

• 0.10

• 10

• 1.0 x 10^-3

• 1.0 x 10^-2

The following reaction : SO_{2 (g)} + NO_{2 (g)} ⇌ SO_{3 (g)} + NO (g) established equilibrium and was found to contain 0.40 M SO₃ , 0.30 M NO, 0.15 M NO₂ , and 0.20 M SO₂. Calculate the equilibrium constant for this reaction.

• 4.0

• .42

• .25

• 1.0

Calculate [H₂O] if K_eq = 1.2,[CO₂] = 0.846M, and [CH₄]= 0.0713M4CuO_(s) +CH_4(g) ⇌ CO_2(g)+4Cu_(s) +2H₂O_(g)

• 0.101 M

• 0.318 M

• 0.0102 M

• 3.77 M

What is the K_eq expression for this reaction?

• K_c = [NO₂]² / [NO]² [O₂]

• K_c = [NO]² [O₂] / [NO₂]²

• K_c = [NO]² [O₂] [NO₂]²

• K_c = [NO₂]² / [NO]² + [O₂]

Tags

NGSS.HS-PS1-7