Problem 13.59 For each of the following equilibria, write the equilibrium consta

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Problem 13.59

For each of the following equilibria, write the equilibrium constant expression for Kc. Where appropriate, also write the equilibrium constant expression for Kp.

Part A

WO3(s)+3H2(g)?W(s)+3H2O(g)

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Part B

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Part C

Ag+(aq)+Cl?(aq)?AgCl(s)

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Part D

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Part E

2FeCl3(s)+3H2O(g)?Fe2O3(s)+6HCl(g)

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Part F

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Part G

MgCO3(s)?MgO(s)+CO2(g)

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Part H

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Problem 13.59

For each of the following equilibria, write the equilibrium constant expression for Kc. Where appropriate, also write the equilibrium constant expression for Kp.

Part A

WO3(s)+3H2(g)?W(s)+3H2O(g)

Kc=[H2]3[H2O]3 Kc=[H2O]3[W][H2]3[WO3] Kc=[H2O]3[H2]3 Kc=[H2]3[WO3][H2O]3[W]

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Part B

Kp=(PH2O)3(PW)(PH2)3 Kp=(PH2O)3(PH2)3 Kp=(PH2)3(PH2O)3 There is no gas phase in the reaction.

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Part C

Ag+(aq)+Cl?(aq)?AgCl(s)

Kc=1[Ag+][Cl?] Kc=[Ag+][Cl?] Kc=[Ag+][Cl?][AgCl] Kc=[AgCl][Ag+][Cl?]

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Part D

Kp=1(PAg+)(PCl?) Kp=(PAg+)(PCl?)(PAgCl) Kp=(PAgCl)(PAg+)(PCl?) There is no gas phase in the reaction.

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Part E

2FeCl3(s)+3H2O(g)?Fe2O3(s)+6HCl(g)

Kc=[FeCl3]2[H2O]3[Fe2O3][HCl]6 Kc=[H2O]3[HCl]6 Kc=[HCl]6[H2O]3 Kc=[Fe2O3][HCl]6[FeCl3]2[H2O]3

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Part F

Kp=(PH2O)3(PHCl)6 Kp=(PFe2O3)(PHCl)6(PFeCl3)2(PH2O)3 Kp=(PHCl)6(PH2O)3 There is no gas phase in the reaction.

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Part G

MgCO3(s)?MgO(s)+CO2(g)

Kc=[MgO][MgCO3] Kc=[MgO][CO2][MgCO3] Kc=[CO2] Kc=[MgCO3][MgO][CO2]

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Part H

Kp=1PCO2 Kp=(PMgCO3)(PMgO) Kp=PCO2 There is no gas phase in the reaction.

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Explanation / Answer

A) Kc = [ H20]3 / [H2]3

B)

Kp = (pH20)3 / ( pH2)3

C) Kc = 1 / [Ag+] [Cl-]

D) there is no gas phase in thsi reaction

E) Kc= [HCl]6 / [H20]3

F) Kp (pHCl)6 / (pH20)3

G) Kc = [C02]

H) Kp = pC02

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