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When carbon dioxide dissolves in water it reacts to produce carbonic acid, H2CO3(aq), which can ionize in two steps.
Calculate the equilibrium constant for the reaction
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Chapter 12 Solutions
Chemistry: The Molecular Science
- Consider the system 4NH3(g)+3O2(g)2N2(g)+6H2O(l)H=1530.4kJ (a) How will the concentration of ammonia at equilibrium be affected by (1) removing O2(g)? (2) adding N2(g)? (3) adding water? (4) expanding the container? (5) increasing the temperature? (b) Which of the above factors will increase the value of K? Which will decrease it?arrow_forwardWrite an equation for an equilibrium system that would lead to the following expressions (ac) for K. (a) K=(Pco)2 (PH2)5(PC2H6)(PH2O)2 (b) K=(PNH3)4 (PO2)5(PNO)4 (PH2O)6 (c) K=[ ClO3 ]2 [ Mn2+ ]2(Pcl2)[ MNO4 ]2 [ H+ ]4 ; liquid water is a productarrow_forwardConsider the system 4NH3(g)+3O2(g)2N2(g)+6H2O(l)H=1530.4kJ (a) How will the amount of ammonia at equilibrium be affected by 1. removing O2(g)? 2. adding N2(g)? 3. adding water? 4. expanding the container at constant pressure? 5. increasing the temperature? (b) Which of the above factors will increase the value of K? Which will decrease it?arrow_forward
- Kafor acetic acid (HC2H3O2) at 25°C is 1.754105 . At 50°C, Kais 1.633105 . Assuming that H° and S° are not affected by a change in temperature, calculate S° for the ionization of acetic acid.arrow_forwardWhat is the equilibrium expression for the following reaction? CH4(g) + 2O2(g) ⇌ CO2(g) + 2H2O(g)arrow_forwardConsider the following chemical reaction at equilibrium: NH₃(aq) + H₂O(l) ⇌ NH₄⁺(aq) + HO⁻(aq) If one drop of aqueous sodium hydroxide (NaOH) is added, in which direction will the equilibrium shift? A) reactants B) products C) neither the reactants nor the productsarrow_forward
- Chemistry 4. In some equilibria, the value of K increases as temperature increases. In other equilibria, the value of K decreases as temperature increases. Explain how the endothermic or exothermic nature of a reaction determines which relationship we will see. Is our Ca(OH); equilibrium endothermic or exothermic as written in Eqn 1? Explain. 2+ Ca(OH)2(s) = Ca"(aq) + 2 OH (aq) Eqn.1arrow_forwardFor the reaction below, Kc = 7.2 × 10⁻⁴. What is the equilibrium concentration of NOF if the reaction begins with 0.92 M NO and 0.92 M F₂? 2 NO (g) + F₂ (g) ⇌ 2 NOF (g)arrow_forwardCh 9 M # 9Write the equilibrium constant expression, K, for the following reaction taking place in dilute aqueous solution. HCN(aq) + H2O(l) H3O+(aq) + CN-(aq) K= ___/___arrow_forward
- Consider the synthesis of ammonia: N2 (g) +3H2(g) 2NH3 (g)arrow_forwardWrite the equilibrium constant expression for each of the following: (If a box is not needed, leave it blank.) Submit K K K K K a. CaCO3 (s) — CaO(s) + CO2(g) | b. BaBr₂ (s) ⇒ Ba²+(aq) + 2 Br¯(aq) c. 4H₂O(g) + 3 Fe(s) — 4H₂ (g) + Fe3 04 (8) d. HClO(aq)= H(aq)+CIO (aq) e. NH3(aq)+H,O(l)=NH_*(aq)+OH (aq) Show Tutor Stepsarrow_forwardHi, I only need help with question # 3. Equilibrium Write the equilibrium expressions for the following reactions:a) 3Fe(s) + 4H2O(g) ↔ Fe3O4(s) + 4H2(g)b) CH3COOH(aq) + H2O(l) ↔ CH3COO-(aq) + H3O+(aq)c) N2(g) + 3Br2(g) ↔ 2NBr3(s)d) CaCl2(s) ↔ Ca2+(aq) + 2Cl-(aq) Consider the following equilibrium: CH3COOH(l) + C2H5OH(l) ↔ CH3CO2C2H5(l) + H2O(l) Keq =2.2 What must the concentration of water be for a mixture with [CH3COOH]= 0.10M, [CH3CO2C2H5]=2.0M, [C2H5OH]= 5.0M to be at equilibrium? Note: water is NOT the solvent in this reaction, therefore it will be included in the equilibrium expression. 3. Predict the direction of the following equilibrium shifts (Please label Forward (F) or Reverse (R)): a) H2O (g) + CO(g)↔ H2(g) + CO2(g) Water is removed? ___Hydrogen is added? ___Carbon monoxide is added? ___b) 4Fe(s) + 3O2(g) ↔ 2Fe2O3(s) + 1648 kJThe temperature is increased? ___The pressure is increased? ___c) CaCl2(aq) ↔ Ca2+(aq) + 2Cl-(aq) NaCl is added? ___AgNO3 is added? ___arrow_forward
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