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- (a) What does it mean when the reaction quotient, Q, is numerically equal to the equilibrium constant, Kc? (b) What does it mean when it is less than the equilibrium constant? (c) What does it mean when it is less than the equilibrium constant?Be sure to answer all parts. Determine Angas for each of the following reactions: (a) MgCO3(s) →→→ MgO(s) + CO₂(g) mol (b) 2 H₂(g) + O₂(g) → 2 H₂O() mol (c) HNO3(1) + CIF(g) → CIONO₂(g) + HF(g) molThe reaction 2CO(g) + O2(g) = 2 CO2(g) is known to be exothermic. According to Le Chatelier's principle, how will this reaction's equilibrium be affected if the reaction temperature is increased? (A) The equilibrium constant will decrease and the reaction will shift to the left. (B) The equilibrium constant will be unchanged, but the reaction will shift to the left. (C) The equilibrium constant will increase and the reaction will shift to the right. (D) The equilibrium constant will be unchanged, but the reaction will shift to the right. (E) The equilibrium concentrations will not be affected.
- Consider the following equilibrium reaction: 2 CH3OH + CH2O ⇌CH2(OCH3)2+ H2O ΔH = + 46 indicate the direction that the equilibrium will shift when the following changes are made.(No states are provided because the solvent for the reaction is not water, so aq for aqueous would not be appropriate.) (a)Concentration of CH3OH increases (b)H2O is removed from the reaction (c)Reaction is heated1) Predict the products and the expected direction of equilibrium for the following reaction:Consider the following equilibrium reaction: 2 CH3OH + CH2O ⇌CH2(OCH3)2+ H2O ΔH = + 46 cal Indicate the direction that the equilibrium will shift when the following changes are made.(No states are provided because the solvent for the reaction is not water, so aq for aqueous would not be appropriate.) (d)How does the equilibrium constant (Keq) change when temperature is decreased?
- What is the correct equilibrium constant expression for the following reaction? NH3(aq) + H₂O(NH4+ (aq) + OH(aq) [NH3] [H₂O] [NH4]+[OH]- (A) Kc = (B) K (C) Kc (D) Kc (E) Kc = = = = - [NH₂+] [OH-] [NH3] [NH4+] [OH [NH3] [H₂O] [NH3] [NH4+] [OH [NH₁+]+[OH-] [NH3]Consider the reaction: 2 NH3(g) N₂(g) + 3H₂(g). At T = 740 K, the equilibrium constant Kc for this reaction is Kc = 10. What is the correct form of the equilibrium constant Kc for this reaction? (A) Kc = [N₂] [H₂]³ (B) Kc (C) Kc = (D) Kc = (E) Kc - 2[NH3] [N₂]+3 [H₂] [N₂] +3 [H₂] 2[NH3] 2 [NH3] [N₂] [H₂] ³ 13 [N₂] [H₂] ³ [NH3]²5. One of the key steps in the tricarboxylic acid (TCA) cycle is the hydration of fumarate to malate: Fumarate-² + H₂O = Malate-2 The standard reaction Gibbs free energy and enthalpy for this reactions are -880 cal/mol and 3560 cal/mol, respectively. (a) What is the equilibrium constant for this reaction (25 °C)? (b) Is the reaction favorable (spontaneous) at 25 °C? (c) What is the equilibrium constant of this reaction under physiological conditions (37 °C)? (d) Is this reaction favorable at 37 °C?
- 1. For the formation of 8.0 mol of water, which reaction uses the most nitric acid? (a) 3Cu + 8HNO3 (b) Al₂O3 + 6HNO3 (c) 4Zn + 10HNO3 — 3Cu(NO3)2 + 2NO+ 4H₂O 2Al(NO3)3 + 3H₂O 4Zn(NO3)2 + NH4NO3 + 3H₂O5. (1) One of the following reactions (A-B) is invalid. Identify the invalid reaction and explain what is incorrect as drawn. A) NaO -요 HO B) N H acetic acid N10) The following reaction is exothermic. Which of the following will drive the reaction to the right (towards products)? CH4(g) +20₂(g) = CO₂(g) + 2 H₂O(g) A) A decrease in temperature B) An increase in temperature C) The removal of CH4 D) The addition of CO