Question

Consider the reaction shown below. PbCO3(s) PbO(s) + CO2(g) Calculate the equilibrium pressure of CO2 in...

Consider the reaction shown below. PbCO3(s) PbO(s) + CO2(g) Calculate the equilibrium pressure of CO2 in the system at the following temperatures. (a) 100°C atm (b) 420°C atm Note: To find the value of the equilibrium constant at each temperature you must first find the value of G0 at each temperature by using the equation G0 = H0 - TS0 For this reaction the values are H0 = +88.3 kJ/mol and S0= 151.3 J/mol*K

Homework Answers

Answer #1

PbCO 3 Delta H_f= -699.1 Delta G_f= -625.5 Delta S=161
CO2 Delta H_f = -393.5 Delta G_f= -394.4 Delta S=213.6
PbO= Delta H_f = -217.3 Delta G_f = -187.9 Delta S=68.7

H0 = +88.3 kJ/mol and S0= 151.3 J/mol*K

G0= H0 - TΔS0   ......AT 100°C

  = 88300 - 373.15*151.3 = 31.842 Kj /mol

ΔG = Δ G0 + RT ln K = Δ G0 + RT ln P(REST ARE SOLIDS SO CONC CAN BE TAKEN 1)

AT EQ ΔG = 0

-31842 = 8.314 * 373.15 ln P

P = 3.487 * 10^-5 atm

G0= H0 - TΔS0   ......AT 420°C

  = 88300 - 693.15*151.3 = -16.573 Kj /mol

ΔG = Δ G0 + RT ln K = Δ G0 + RT ln P(REST ARE SOLIDS SO CONC CAN BE TAKEN 1)

AT EQ ΔG = 0

16573 = 8.314 * 693.15 ln P

ln P = 2.8759

P = 17.74 atm

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Consider the reaction shown below. PbCO3(s) PbO(s) + CO2(g) Calculate the equilibrium pressure of CO2 in...
Consider the reaction shown below. PbCO3(s) PbO(s) + CO2(g) Calculate the equilibrium pressure of CO2 in the system at the following temperatures. (a) 180°C atm (b) 460°C atm Note: To find the value of the equilibrium constant at each temperature you must first find the value of G0 at each temperature by using the equation G0 = H0 - TS0 For this reaction the values are H0 = +88.3 kJ/mol and S0= 151.3 J/mol*K
Consider the reaction shown below. PbCO3(s) PbO(s) + CO2(g) Calculate the equilibrium pressure of CO2 in...
Consider the reaction shown below. PbCO3(s) PbO(s) + CO2(g) Calculate the equilibrium pressure of CO2 in the system at the following temperatures. (a) 180°C atm (b) 460°C atm Note: To find the value of the equilibrium constant at each temperature you must first find the value of G0 at each temperature by using the equation G0 = H0 - TS0 For this reaction the values are H0 = +88.3 kJ/mol and S0= 151.3 J/mol*K
13. Consider the reaction shown below. PbCO3(s) PbO(s) + CO2(g) Calculate the equilibrium pressure of CO2...
13. Consider the reaction shown below. PbCO3(s) PbO(s) + CO2(g) Calculate the equilibrium pressure of CO2 in the system at the following temperatures. (a) 160°C ____ atm (b) 490°C ____ atm Note: To find the value of the equilibrium constant at each temperature you must first find the value of G0 at each temperature by using the equation G0 = H0 - TS0 For this reaction the values are H0 = +88.3 kJ/mol and S0= 151.3 J/mol*K
Consider the reaction shown below. PbCO3(s) ----> PbO(s) + CO2(g) Calculate the equilibrium pressure of CO2...
Consider the reaction shown below. PbCO3(s) ----> PbO(s) + CO2(g) Calculate the equilibrium pressure of CO2 in the system at the following temperatures. (a) 110°C (b) 550°C
Consider the following reaction: PbCO3(s)←−→PbO(s)+CO2(g) Part A Using data in Appendix C in the textbook, calculate...
Consider the following reaction: PbCO3(s)←−→PbO(s)+CO2(g) Part A Using data in Appendix C in the textbook, calculate the equilibrium pressure of CO2 in the system at 440 ∘C. Express your answer using two significant figures. PCO2 =   atm Part B Using data in Appendix C in the textbook, calculate the equilibrium pressure of CO2 in the system at 250 ∘C. Express your answer using two significant figures. PCO2 =   atm
What is ΔGo (in kJ) at 464 K for the following reaction? PbO(g) + CO2(g) →...
What is ΔGo (in kJ) at 464 K for the following reaction? PbO(g) + CO2(g) → PbCO3(s) PbO: ΔHfo = -219.0 kJ/mol and So = 66.5 J/K mol) PbCO3(s): ΔHfo = -699.1 kJ/mol and So = 131.0 J/K mol) CO2: ΔHfo = -393.5 kJ/mol and So = 213.6 J/K mol)
Consider the following reaction: PbCO3(s)←−→PbO(s)+CO2(g) Part A: Using data in Appendix C in the textbook, calculate...
Consider the following reaction: PbCO3(s)←−→PbO(s)+CO2(g) Part A: Using data in Appendix C in the textbook, calculate the equilibrium pressure of CO2 in the system at 440 ∘C. Express your answer using two significant figures. Part B: Using data in Appendix C in the textbook, calculate the equilibrium pressure of CO2 in the system at 250 ∘C. Express your answer using two significant figures.
a) What is ΔGrxno (in kJ) at 2715 K for the following reaction? 2POCl3(g) → 2PCl3(g)...
a) What is ΔGrxno (in kJ) at 2715 K for the following reaction? 2POCl3(g) → 2PCl3(g) + O2(g) POCl3(g): ΔHfo = -592.7 kJ/mol and Sº = 324.6 J/K mol) PCl3(g): ΔHfo = -287.0 kJ/mol and Sº = 311.7 J/K mol) O2(g): ΔHfo = ? kJ/mol and Sº = 205.0 J/K mol) b) At what temperature (IN KELVIN) does the above reaction become spontaneous? c) What is ΔGrxno (in kJ) at 488 K for the following reaction? PbO(g) + CO2(g) →...
Consider the following reversible heterogenous reaction: C(s)+CO2(g) <--> 2CO(g) When equilibrium is reached at a certain...
Consider the following reversible heterogenous reaction: C(s)+CO2(g) <--> 2CO(g) When equilibrium is reached at a certain temperature, the total pressure of the system is found to be 5.17 atm. If the equilibbrium constant Kp for this reaction is equal to 1.67 at this temperature, calculate the equilibrium partial pressures of CO2 and CO gases.
The equilibrium reaction CaCO3(s) ↔ CaO(s) + CO2(g) reaches ΔG° = 0 at 835°C. At this...
The equilibrium reaction CaCO3(s) ↔ CaO(s) + CO2(g) reaches ΔG° = 0 at 835°C. At this temperature: the pressure of CO2 is 1 atm the percent yield of CaO reaches 100% ΔH° = ΔS° the decomposition of CaCO3 begins the reaction becomes exothermic