Hcoo h o hcooh 3 k2 hcoo h o 3 hcooh k2 1

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: HCOOH 3 K2 HCOO H O 3 HCOOH K2 1 K1 AgCl(s) in water After adding NH3(aq) Reaction Equations and Equilibrium Constants Gases: The Equilibrium Constant, KP Deriving an Equilibrium Constant from Others If we can add the equations of two or more reactions to obtain a balanced chemical equation for another reaction balanced chemical equation for another reaction, K for the net reaction is the net reaction is the product of the equilibrium constants of the other reactions at the same temperature. EXAMPLE AgCl (s) in water: AgCl (s) ⇌ Ag+ (aq) + Cl- (aq) After adding NH3(aq) : Ag+ (aq) + 2 NH3 (aq) ⇌ Ag(NH3)2+ (aq) K2 Net: Knet AgCl (s) + 2 NH3 (aq) ⇌ Ag(NH3)2+ (aq) + Cl- (aq) Knet = K1 x K2 Mixtures of gases are solutions just as liquids are. Use KP, based upon activities of gases. 2 2 SO2(g) + O2(g) PSO3 P 2 SO3(g) PSO2 P P KP = (aSO3) (aSO2)2(aO2) aSO3 = PO2 P K1 aSO3 = aSO2 = KP = (PSO3 )2 (PSO2)2(PO2 ) 5 Gases: The Equilibrium Constant, KC Gases: The Equilibrium Constant, KC 2 SO2(g) + O2(g) (aSO3)2 (aSO2)2(aO2) = P (PSO3 )2 (PSO2)2(PO2 ) ([SO3] RT)2 ([SO2] RT)2([O2] RT) ([SO3])2 ([SO2 ])2([O 2]) In concentration we can do another substitution 2 SO2(g) + O2(g) [SO3]= nSO3 V = PSO3 RT PX (aX ) = [X] = c◦ RT c◦ PX = [X] RT = P RT [SO2]= 2 SO3(g) PSO2 RT [O2] = PO2 RT KP = 2 SO3(g) PX = [X] RT = P = KC RT Where P = 1 bar An Alternative Derivation 2 SO2(g) + O2(g) PSO3 Kc = 2 2 Pure Liquids and Solids 2 SO3(g) Where P = 1 bar [SO3] PSO3 RT = = RT 2[O ] 2 2 [SO2] 2 PSO2...
View Full Document

Ask a homework question - tutors are online