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What can we deduce from the observation that in the reaction 2.H2 + O2 => 2...
Given that the reaction 2 H2(g) O2(g)2 H20(g) is exothermic, which of the following is true of the reaction 2 H2O(g) 2 H2(g) + O2(g) ? Its activation energy is greater than that of 2 H2(g) +O2(g) 2 H2O(g) Its activation energy is lower than that of 2 H2(g)+ O2(g) 2 H2O(g There is no relationship between its activation energy and that of 2 H2(g) + O2(g )-+ 2 H20(g) ts activation energy is the same as that of 2...
QUESTION 7 AH® - -560 kJ Look at this reaction: 2H2(g) + O2(9) --> 2H20(1 Which one of the following statements is true? Heat is absorbed during the reaction The reaction is endothermic The enthalpy change is positive This reaction is exothermic
Consider the reaction: H2(g) + (1/2)O2(g) -------> H2O(l) ΔH° = -286 kJ Which of the following is true? (Select all that apply) the reaction is endothermic heat is given off by the surroundings the reaction is exothermic heat is absorbed by the system the enthalpy of the products is less than the that of the reactants
2 H2O(I) ⇌ 2 H2(g) + O2(g) Le Châtelier's principle predicts that decreasing the volume of the reaction vessel will _______ decreasing the pressure of the reaction vessel a(n) increase in Keq an increase in the concentration of O2 no changes in equilibrium partial pressures a decrease in the concentration of H2 QUESTION 18The slope and intercept of an Arrhenius plot made for the first-order decomposition reaction are -5382.7K and 34.869 at 303K, what is the value of the activation energy (l/mol) at this temperature? QUESTION 19 The rate...
need help with all Predict if the following reactions are exothermic or endothermic a) 2 H2(g) + O2(g/> 2 H2O(g) ΔΗ -484 kJ b) 2 Al(s) + Fe2O3(s) → 2 Fe(s) + Al2O3(s)AH =-852 kJ c) 2 H2O(g) 2 H2(g) + O2(g)AH :484 kJ d) 2 NH3(g) → N2(g) + 3 H2(g)AH = 92.2 kJ e) H2O(g) H2O(l) ΔΗ--44 kJ
The elementary reaction 2 H2O(g) + 2 H2(g) + O2(g) proceeds at a certain temperature until the partial pressures of H20, H2, and O2 reach 0.010 bar, 0.0025 bar, and 0.0015 bar, respectively. What is the value of the equilibrium constant at this temperature? K = 11
Can an intermediate appear in the net balanced reaction? Yes, because it is part of the reaction mechanism No, because it is a product in one step but a reactant in another step and cancels out of the net reaction Oo oo Yes, because all species in the reaction must show up in the net reaction No, because it is a product and products do not appear in the rate law For a certain reaction the rate law is: Rate...
Please help with each reaction!! Problem 2. Determine the heat of reaction at 25°C for the following elementary chemical reactions and state whether each one is endothermic or exothermic. Sketch an energy diagram for each reaction, showing the relative placements of each species. O + N2 → NO+N OH + OH → H2O+O CO + OH → CO2 + H CO+O2 → CO2 + 0 H+ O2 → OH+ 0
For the reaction 2 H2O(g) = 2 H2(g) + O2(g), which of the following is the equilibrium constant expression? K = [H21 [02] [H20] K = [H20] / [H21 [02] K = [H2012 / [H272 [02] K = [H212 [102] / [H2012
Use Hess's law to determine A.Hº for the reaction C3H4(g) + 2 H2(g) -> C3H8(8), given that Hy(8) + O2(8) — H2O(1) A Hº = -285.8 kJ mol-1 C3H4(8) + 402(g) — 3 CO2(g) + 2 H2O(1) A Hº = -1937 kJ mol-1 C3H2(g) + 5O2(g) — 3CO2(g) + 4H2O(1) A Hº = -2219.1 kJ mol-1