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y eview fassigimentProblemID- 105177264&offs Chem 1B TTh CCC Fall 2018 KChapter

ID: 716247 • Letter: Y

Question

y eview fassigimentProblemID- 105177264&offs Chem 1B TTh CCC Fall 2018 KChapter 15 Exercise 15.60 - Enhanced- with Feedback Part A Consider the following reaction Calculate the equilibrium partial pressure of CO2 Express the pressure in torr to three significant figures. CO(g) + H20(g)CO2(g) H2(8) Kp 0.0611 at 2000 K A reaction mixture initially contains a CO partial pressure of 1340 torr and a H2O partial pressure of 1710 torr at 2000 K You may want to reference (Pages 693 -702) Section 15.8 while completing this problem. torr Submit Request Answer Part B Complete previous part(s) Provide Feedback

Explanation / Answer

CO(g ) + H20(g) --> CO2(g) + H2(g)

t=0sec 1340 torr 1710 torr

t=eq. 1340-p 1710-p p p

Kp=(PCO2*PH2)/(PCO*PH20)

0.0611=(p*p)/(1340-p)*(1710-p)

16.37 p2=(1340-p)*(1710-p)

16.37p2=2291400 - 3050 p + p2

15.37 p2+3050 p -2291400=0

Solving the quadratic equation,we get two roots out of which one will be neglected since pressure can't be negative.So,-

p(equilibrium partial pressure of CO2)=299 torr{upto 3 significant figures}