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This review was not prepared by your professor or school and is neither approved nor endorsed by your college or university UTD-GENERAL CHEMISTRY II PROF. DIECKMANN UTD CHEM 1312 DIECKMANN EXAM 2 REVIEW PRACTICE: Which of the following statements is/are true regarding equilibrium in general? i. at equilibrium, the forward and reverse reactions stop ii. at equilibrium, the rate of the forward reaction is greater than the rate of the reverse reaction ii. at equilibrium, the concentration of reactants and products are constant. A. i only B. ili only C. ii only D. i and i E. i and ili PRACTICE: What is the value of Kp for the following reaction at 298 K: A(g) + 3 B2 (g) 2C(g) it at equilibrium the partial pressures for A = 0.065 atm, B2-0.46 atm, and a. 0.00876 b. 28.43 C. 18.95 d. 1.08 e. 114.2 0.850 atm.

Explanation / Answer

1)

Answer

C) III only

Explanation

At equilibrium reaction will not stop but the rate of forward reaction is equal to the rate of reverse reaction. So, the concentrations of reactants and products will be constant.

2)

Answer

e)114.2

Explanation

A(g) + 3B2(g) - - - - - > 2C(g)

Kp = (PC)2/(PA × (PB2)3)

= (0.850atm)2/(0.065atm ×(0.46atm)3)

= 114.2

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