Equilibrium Constant
Chapter 16-4
	Dr. Robert Belford & Xiaomin Tu

C₄H₁₀(g)<===> C₂H₆(g)+ C₂H₄(g)

Question 1

What is the concentration of C₄H₁₀ at equilibrium if the concentrations of C₂H₆ and C₂H₄ are both 0.014M? Kc = 0.07

(A) 0.0014

(B) 0.0028

(C) 0.014

(D) none of the above

Hint

Your response

Not answered yet

Question 2

For the same reaction, if the initial concentration of C₄H₁₀ is 0.035M, and there is no C₂H₆ C₂H₄ present initially. What is the equilibrium concentration of C₄H₁₀?

(A) 0.09M

(B) 0.009M

(C) 0.0009M

(D) none of the above

Hint

Your response

Not answered yet

Question 3

Following Q2, what is the equilibrium concentration of C₂H₆?

(A) 0.001M

(B) 0.026M

(C) 0.0026M

(D) none of the above

Your response

Not answered yet

Question 4

If the initial concentration of C₄H₁₀ is 0.030M, and the ones of C₂H₆ and C₂H₄ are both 0.023M. At equilibrium, the concentration of C₄H₁₀ becomes 0.018M, what is the value of K_c of the reaction.

(A) 0.068

(B) 0.078

(C) 0.088

(D) none of the above

Hint

Your response

Not answered yet

Question 5

For the same reaction, if the 2.0L container was evacuated, then pumped in with gases at the following pressure, C₄H₁₀ = 1.2atm, C₂H₆and C ₂H₄ = 0.6 atm. What is the partial pressure (in atm) of C₄H₁₀ at equilibrium? K_p =0.64.

(A) 0.8 atm

(B) 1.0atm

(C) 1.1 atm

(D) none of the above

Hint

Your response

Not answered yet