Constants Periodic Table Using data in Appendix C in the textbook, calculate the
ID: 1039896 • Letter: C
Question
Constants Periodic Table Using data in Appendix C in the textbook, calculate the equilibrium pressure of CO2 in the system at 410 °C. Consider the following reaction ????? (s)-. PbO (s) + CO2 (g) Express your answer using two significant figures You may want to reference Pages 833- 836) Section 19.7 while completing this problem. Pco2- SubmitPrev ious Answers Request Answer X Incorrect, Try Again; 3 attempts remaining Part B Using data in Appendix C in the textbook, calculate the equilibrium pressure of CO2 in the system at 210 °C. Express your answer using two significant figures CO2 Submit Request AnswerExplanation / Answer
DHrxn = (DH0fCO2+DH0fPbO) - (DH0fPbCo3)
= ((-393.5)+(-219))-(-699.15)
DHrxn = 86.65 kj/mol
DSrxn = (Ds0fCO2+Ds0fPbO) - (Ds0fPbCo3)
= (213.7+66.52)-(131)
= 149.22 j/mol.k
DG0 = DH0-TDS0
DG0 = 86.65*10^3 - (683*149.22)
= -15267.26 j/mol
dG0 = - RTlnK
-15267.26 = -8.314*683lnk
k = equilibrium constant = 14.71
K = pCO2
At , 410 C
pCO2 = partial pressure of CO2 = 14.71 atm
DG0 = DH0-TDS0
T = 210 c = 483 k
DG0 = 86.65*10^3 - (483*149.22)
= 14576.74 j/mol
dG0 = - RTlnK
14576.74 = -8.314*683lnk
k = equilibrium constant = 0.0767
K = pCO2
At , 210 C
pCO2 = partial pressure of CO2 = 0.0767 atm