Consider the following
graph for the reaction:N2O4(g)
2 NO2(g) ∆H = +45 kJ/mol
a)What is one possible stress that could have been imposed on the system at time t1? Explain how this would produce the result.
b) What stress is imposed at time t3? Explain how the stress would produce the result.
Give the following
system:
4 NH3(g) + 5 O2(g)
4 NO(g) + 6 H2O(g) ΔH= +53 kJ
Explain the affect of each of the following on the concentration of NH3.(3 x 1.5 marks)
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Consider the following graph for the reaction:N2O4(g) 2 NO2(g) ∆H = +45 kJ/mol a)What is one...
13. The reaction N203(9)=NO(g) + NO2(g) has AHr of +40.5 kJ/mol How will the following changes affect the equilibrium? Shift to left (reactants), right (products), or no change a. Adding more N203(g). b. Adding more NO2(g). c. Increasing the volume of the reaction flask d. Lowering the temperature e. Adding a catalyst
2 NO(g) + O2(g) ⇄ 2 NO2(g) ΔH = -114 kJ Assume that this system has reached equilibrium in a 1.00 L container at 298 K. Which of the following changes will result in a greater amount of NO2(g) at equilibrium? X. Raise temperature to 398 K Y. Lower volume to 0.50 L Z. Add a catalyst
Consider the following chemical reaction. NH3(g) + 2 O2(g) → HNO3(aq) + H2O(l) Calculate the change in enthalpy (ΔH) for this reaction, using Hess' law and the enthalpy changes for the reactions given below. (1a) 4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(l); ΔH = −1166.0 kJ/mol (2a) 2 NO(g) + O2(g) → 2 NO2(g); ΔH = −116.2 kJ/mol (3a) 3 NO2(g) + H2O(l) → 2 HNO3(aq) + NO(g); ΔH = −137.3 kJ/mol
Determine the enthalpy of formation (in kJ/mol) for NO2 (g), given the following reaction: 4 NH3 (g) + 7 O2 (g) 4 NO2 (g) + 6 H2O(l) rxnH° = –1400 kJ, fH°(NH3, g) = –46 kJ/mol, fH°(H2O,l) –286 kJ/mol. (1) +733 (2) +33 (3) +794 (4) –28 (5) –59
18. Consider the following data.
2 NO(g) N2(g) + O2(g)
H = -180.7 kJ
2 NO(g) + O2(g)
2 NO2(g)
H = -113.1 kJ
2 N2(g) +
O2(g) 2 N2O(g)
H = +163.2 kJ
Use Hess's law to calculate H for the reaction below.
3 NO(g) N2O(g) + NO2(g)
H = ______________ kJ
Consider the following equilibrium reaction: 4NH3(g) + 5O2(g) <---> 4NO(g) + 6H2O(g) Heat = -904.4 kJ How does each of the following changes affect the yield of NO at equilibrium? Answer increase, decrease, or no change. a. increase [NH3] b. Increase [H2O] c. Decrease [O2] d. Decrease the volume of the container in which the raction occurs. e. Add a catalyst f. Increase temperature
Assume the reaction 3 O2(g) <===> 2 O3(g) (Delta H° =285 kJ/mol) is at equilibrium. What effect will each of the following have (explain each)? a) adding more O2 b) adding more O3 c) removing O3 d) increasing pressure in the container e) adding an inert gas f) increasing the temperature in the container
Consider the following data. 2 H2(g) + O2(g) 2 H2O(l) ΔH = -571.7 kJ N2O5(g) + H2O(l) 2 HNO3(l) ΔH = -92.0 kJ N2(g) + 3 O2(g) + H2(g) 2 HNO3O(l) ΔH = -348.2 kJ Use Hess's law to calculate ΔH for the reaction below. 2 N2O5(g) 2 N2(g) + 5 O2(g) ΔH = _____kJ
Question 23 15 pts Consider the following reaction: N2O(g) + NO2(g) 3NO(g) AH = 155.7 kJ In which direction will the equilibrium be shifted by the following changes? 1. Adding N20 (Select] 2. Removing some N20 (Select] 3. Adding a catalyst (Select] 4. Adding NO [Select] 5. Increasing the temperature of the reaction mixture [ Select) 6. Decreasing the volume of the reaction vessel [Select] Question 24 10 pts A reaction vessel is charged with HI, which partially decomposes to...
Consider the following reversible reaction: A(g) + 3B(g) ⇌ AB3(g) \DeltaΔH = -245 kJ/mol On your Calcs sheet, please do the following: a) write the expression for the equilibrium constant for this reaction. b) discuss what effect (if any) would EACH of the following procedures have on the equilibrium, and explain the reason(s.) In here, choose the option that would cause a change in the equilibrium constant. Increasing the volume of the reaction container. Increasing the concentration of product AB3 Increasing...