Concept explainers
Consider the reaction: (10.3)
a Write the equilibrium constant expression
b Whet is the numerical value of
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General, Organic, and Biological Chemistry: Structures of Life (5th Edition)
- 1.4 4 (a) Calculate the value of Kc for the reaction: PC15 (8) PC13 (g) + Cl2 (g) AH = Positive Given that when 8.4 mol of PC15 (g): is mixed with 1.8 mol of PC13 (g) and allowed to come to equilibrium in a 10 dm³ container the amount of PC15 (g) at equilibrium is 7.2 mol. Kc = (b) Explain the effect of the following changes below on the value of Kc: (i) Increasing temperature (ii) Lowering the concentration of chlorine (C1₂) (iii) Addition of a catalystarrow_forward12 (9) H₂ (9) In which direction will equilibrium shift if H2 gas is added to the system? + HI is removed as soon as formed? 2HI (g)arrow_forward1.4 4 (a) Calculate the value of Kc for the reaction: PC13 (g) + Cl₂ (8) PC15 (8) Given that when 8.4 mol of PC15 (g) AH = Positive Kc = is mixed with 1.8 mol of PC13 (g) and allowed to come to equilibrium in a 10 dm³ container the amount of PC1, at equilibrium is 7.2 mol. ¹5 (g) (b) Explain the effect of the following changes below on the value of Kc: (i) Increasing temperature (ii) Lowering the concentration of chlorine (C1₂) (iii) Addition of a catalystarrow_forward
- 1:18 Consider the following reaction at equilibrium CO(g) + H₂O(g) Question 4 of 16 A) reactants B) products C) no change = If CO(g) is removed, in which direction will the equilibrium shift? CO₂(g) + H₂(g) Submit Tap here or pull up for additional resourcesarrow_forward2.8. You are given a box containing NH3, N₂, and H₂ at equilibrium at 1000 K. The contents are analyzed, and the following concentrations are found: NH3 = 1.02 mol/L. N₂ = 1.03 mol/L, and H₂ = 1.62 mol/L. Calculate the value of K for the reaction: 2NH3(8) N₂ 2(g) + 3H2(g) =arrow_forwardPredict the equilibrium partial pressure of NO in the reaction described below (for which Kp = 60.6 at the reaction temperature) by constructing an equilibrium expression for Qp, constructing an ICE table, writing an equilibrium expression for Kp expressed in partial pressures, and solving for the equilibrium partial pressure. Complete Parts 1-4 before submitting your answer. (0.20) 3 NEXT > An initial mixture of 0.20 atm of every species is allowed to react. Set up the expression for Qp to determine the direction of the reaction. Each reaction participant must be represented by one tile. Do not combine terms. Once the expression is constructed, solve for Qp. (0.40) 0.40 (0.40) (0.20)² 0.040 Qp = (0.20) 2 NOBr(g) = 2 NO(g) + Br₂(g) (0.40)² 0.020 2 (0.40) (x) (0.20) = (0.40) 4 (2x) (0) (2x)² RESET (0.20) 0.20arrow_forward
- 2. Given the following equilibrium systems, determine the effect on the equilibrium when the named "stress" is applied. Normally the addition of solids or liquids to an equilibrium has no effect. a 2 NH3 (g) + 92.5 kJ 5 N2(9) + 3 H2 (9) Stress Equilibrium Shift 1 Remove N2 (9) 2 Add NH3 (9) 3 Remove H2 (9) 4 Remove NH3 (9) Add O2 (g) 6 Decrease Pressure 7 Add Heat b Ag2CO3 (s) 5 2 Ag1+ (aq) + CO32 (aq) Stress Equilibrium Shift 1 Add CO32" (aq) Remove Ag* (aq) 1+ 2 3 Add A92CO3 (s) 4 Add heat CANNOT ANSWER 5 Evapourate water offarrow_forwardConsider the following equilibrium for which H = -114.44: 4 HCl(g) + O2(g) 2 Cl2(g) + 2 H2O(g) How will each of the following changes affect an equilibrium mixture of the 4 gases in this reaction?(a) O2(g)) is added to the system. which will happen? the equilibrium will not shift the equilibrium will shift toward product but Keq will not change the equilibrium will shift toward reactant but Keq will not change the equilibrium will shift toward product and Keq will increase the equilibrium will shift toward reactant and Keq will decrease (b) The reaction mixture is cooled. the equilibrium will not shift the equilibrium will shift toward product but Keq will not change the equilibrium will shift toward reactant but Keq will not change the equilibrium will shift toward product and Keq will increase the equilibrium will shift toward reactant and Keq will decrease (c) The volume of the reaction vessel is reduced by 50%. (d) A catalyst is added to the reaction mixture. (e)…arrow_forward1:18 Question 1 of 16 Consider the following chemical reaction at equilibrium: 2NO₂(g) = N₂O4(9) A) reactants If the container's volume is increased by a factor of 2, in which direction will the equilibrium shift? B) product Submit C) neither the reactants nor the product Tap here or pull up for additional resourcesarrow_forward
- At 2000 °C the equilibrium constant for the reaction 2NO(g) = N2(g) + O2(g) is Kc = 2.4 x 10³. Part A If the initial concentration of NO is 0.175 M, what is the equilibrium concentration of NO? Express your answer to two significant figures and include the appropriate units. -4.8.10² Submit Part B X Incorrect; Try Again; 4 attempts remaining Value Submit If the initial concentration of NO is 0.175 M, what is the equilibrium concentration of N₂? Express your answer to two significant figures and include the appropriate units. Part C 0 UA M Previous Answers Request Answer Submit Value ΠΑ Units Request Answer If the initial concentration of NO is 0.175 M, what is the equilibrium concentration of O2? Express your answer to two significant figures and include the appropriate units. www ? Units Request Answer ? **** ?arrow_forward4. When nitrogen gas and chlorine gas react to form nitrogen trichloridge gas, an equilibrium is established in which Keq = 4.15 x 10-5 at 200°C. N₂ (g) + 3 Cl₂ (g) — 2 NCI3 (9) If 2.74 mol of nitrogen gas, N₂ (g), and 0.84 mol of chlorine gas, Cl₂ (g), are put in a 2.0 L reaction vessel, what is the equilibirum concentration of the nitrogen trichloride gas, NC13 (g) at this temperature?arrow_forward(#30) The Equilibrium Constant and the "ICE Chart" Phosphorus pentachloride gas is formed according to the reaction by adding chlorine gas to phosphorus trichloride gas. Then the reaction reaches equilibrium. The equilibrium constant, Kc, equals 49.0 at 230°C. If 0.500 mole each of the reactants are added to a 5-L container, what is the equilibrium composition at 230°C? (30a) In blank #1, type-in our answer for the concentration of phosphorus pentachloride in the product at equilibrium. The unit is Molarity, but enter only the value of your answer with two decimal places. (30b) In blank #2, type in your answer for the concentration of phosphorus trichloride at equilibrium with two decimal places. (30c) In blank #3, type in your answer for the concentration of chlorine gas at equilibrium with two decimal places.arrow_forward
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