Please answer all page, Which of the following can be used to represent the rate

Question

Please answer all page, Which of the following can be used to represent the rate of a reaction? g/L g/mol M/min mol/L Consider the following PE diagram for a reversible reaction: Which of the following describes this reaction? All of the following statements are false for a chemical system in a dynamic equilibrium EXCEPT the concentrations of reactants and products must be equal. the forward reaction is endothermic. the chemical reaction proceeds in the forward direction until all reactants are consumed. the concentrations of reactants and products remain constant over time. What is the correct equilibrium constant expression for the following reaction? K = P_Mgo P_co2 K = P_Mgo P_co2 K = 1/P_co2 K = P_co2

Explanation / Answer

12. rate of reaction = change in conc/time

                                = molarity/min   = M/min

c. M/min

13. Activation energy = 50-20 = 30Kj/mole

    enthalpy                   = HP-HR

                                      = 10-20 = -10Kj/mole

rever reaction  

   Activation energy = 50-10 = 40Kj/mole

    enthalpy                   = HP-HR

                                      = 20-10 = 10Kj/mole

D... answer

14. A at equilibrium conc of reactants and products are equal

15. MgCo3 (s) ---------> MgO(s) + Co2(g)

for solids PMgCo3 = 1 , PMgO = 1

Kp = PCo2

D. Kp = PCo2

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