Guided course 09:34The following is an endothermic reaction where Kc = 6.73 x 103.For each of the choices below predict in which direction the reaction will proceedJules Bruno1430views13rank
Multiple ChoiceConsider the reaction below:CH4 (g) + F2 (g) ⇌ CF4 (g) + HF (g) H = + 38.1 KJ/molThe following changes will shift the equilibrium to the left except one. Which one would not cause a shift to the left?1280views4rank
Multiple ChoiceThe following data was collected for the following reaction at equilibrium 2 A (g) + 3 B (g) ⇌ C (g) At 25 oC K is 5.2 x 10-4 and at 50 oC K is 1.7 x 10-7. Which of the following statements is true?a) The reaction is exothermic.b) The reaction is endothermic.c) The enthalpy change, ΔH, is equal to zero.d) Not enough information is given. 1158views4rank
Multiple ChoiceWhich direction will the following reaction (in a 10.0 L flask) proceed if a catalyst is added to the system? CaCO3 (s) ⇌ CaO (s) + CO2 (g) Kp = 3.2 x 10-28963views4rank
Multiple ChoiceConsider the following gas reaction of A2 ( shaded spheres) and B2 ( unshaded spheres)A2 (g) + B2 (g) ⇌ 2 AB (g) Which container proceeds more to completion? 1030views5rank
Textbook QuestionIs the yield of SO3 at equilibrium favored by a higher or lower pressure? By a higher or lower temperature? 2 SO2(g) + O2 ⇌ 2 SO3(g) ∆H = -47 kcal/mol394views
Textbook QuestionWhat effect do the listed changes have on the position of the equilibrium in the reaction of carbon with hydrogen? C(s) + 2 H2(g) ⇌ CH4(g) ∆H = -18 kcal/mol (-75kJ/mol) Increasing temperature347views
Textbook QuestionWhat effect do the listed changes have on the position of the equilibrium in the reaction of carbon with hydrogen? C(s) + 2 H2(g) ⇌ CH4(g) ∆H = -18 kcal/mol (-75kJ/mol) Increasing pressure by decreasing volume304views
Textbook QuestionWhat effect do the listed changes have on the position of the equilibrium in the reaction of carbon with hydrogen? C(s) + 2 H2(g) ⇌ CH4(g) ∆H = -18 kcal/mol (-75kJ/mol) Allowing CH4 to escape continuously from the reaction vessel308views
Textbook QuestionWhy do catalysts not alter the amounts of reactants and products present at equilibrium?372views
Textbook QuestionWhen the following equilibria are disturbed by increasing the pressure, does the concentration of reaction products increase, decrease, or remain the same? 2 CO2(g) ⇌ 2 CO(g) + O2(g)519views
Textbook QuestionFor the following equilibria, use Le Châtelier's principle to predict the direction of the reaction when the pressure is increased by decreasing the volume of the equilibrium mixture. C(s) + H2O(g) ⇌ CO(g) + H2(g)642views
Textbook QuestionThe reaction CO(g) + H2O(g) ⇌ CO2(g) + H2(g) has ∆H = -9.8 kcal/mol (-41 kJ/mol). Does the amount of H2 in an equilibrium mixture increase or decrease when the temperature is decreased?600views1rank
Textbook QuestionThe reaction H2(g) + I2(g) ⇌ 2 HI(g) has ∆H = -2.2 kcal/mol (-9.2 kJ/mol). Will the equilibrium concentration of HI increase or decrease when A catalyst is added?389views
Textbook QuestionThe reaction H2(g) + I2(g) ⇌ 2 HI(g) has ∆H = -2.2 kcal/mol (-9.2 kJ/mol). Will the equilibrium concentration of HI increase or decrease when H2 is removed?379views
Textbook QuestionThe reaction Fe 3+(aq) + Cl -(aq) ⇌ FeCl 2+(aq) is endothermic. How will the equilibrium concentration of FeCl 2+ change when Cl - is precipitated by addition of AgNO3?350views
Textbook QuestionMany carbonate minerals are insoluble in water and appear in water pipes as 'scale.' Why is scale formation typically only a problem in hot water pipes?309views
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