A catalyst decreases the activation energy of a particular exothermic reaction by 35 kJ/mol, to 38 kJ/mol. Assuming that the mechanism has only one step, and that the products are 61 kJ lower in energy than the reactants, sketch approximate energy-level diagrams for the catalyzed and uncatalyzed reactions. What is the activation energy for the uncatalyzed reverse reaction?

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A 2.50 L reaction vessel contains an equilibrium mixture of 7.3 atm SO3, 2.4 atm SO2, and 1.2 atm O2 at 298 K.  At what temperatures will the following reaction be spontaneous? 2SO3 (g) ⇌ 2SO2 (g) + O2 (g) A. All temperatures  B. The reaction is not spontaneous any temperatures C. Low temperature  D. High temperatures

A reaction with an activation energy of 94.8 kJ/mol is carried out at 281. K and 376. K. The reaction rate at 376. K is  a) should be the same as at the other temperature b) approximately 1.338 times faster than at 281. K c) approximately 2.821e+4 times faster than at 281. K d) approximately 6.496e+4 times faster than at 281. K

Which of the following statements is TRUE regarding the spontaneity of the exothermic reaction listed below? 2 Na(s) + Clzlg) → 2 NaCi(s) The reaction is spontaneous as written only at high temperatures. O The reaction is spontaneous as written only at low termperatures. O There is not enough information provided to determine the spontaneity of the reaction. O The reaction is nonspontaneous as written at all temperatures. O The reaction is spontaneous as written at all temperatures. Question 19 Consider the following chemical reaction for the combustion of hydrogen gas: 2 H2lg) + Ozlg) 2 H2Olg) AHn = -483.6 kJ; ASan = -89.0 J/K Exn %3! What is the equilibrium constant for the reaction at 873.15 K? O 5.22 x 10-25 O 1.06 O 3.81 - 10 O 192 * 104 O 263 - 104

really stuck on these questions i dont have any time conversation data I'd really appreciate a clear step by step on how the answer is reached. thank you

This question concerns the following elementary liquid-phase reaction: AZ B+C (a) Express the net rate of reaction in terms of the initial concentration and conversion of A and the relevant rate constants. (b) Determine the equilibrium conversion for this system. (c) If the reaction is carried out in an isothermal PFR, determine the volume required to achieve 90% of your answer to part (b). Use numerical integration where appropriate. (d) For this specific case, discuss ways in which you can maximise the amount of B that can be obtained. Data: CAO 2.5 kmol m-3 %3D Vo = 3.0 m3 h-1 Krwd = 10.7 h-1 4.5 [kmol m-]h-1 Krev

do not type the answers

Which of the following is NOT required for a reaction to occur? The reactants must collide with the correct orientation. All are required for a reaction to occur. The reactants must surpass the activation energy required for the reaction. The bonds of the products must formed. The reactants must collide with each other with sufficient energy to break bonds and form the activated complex.

Consider the following potential energy diagram: * 1 p Reaction A Reaction B potential potential energy energy Reaction Pathway Reaction Pathway Reaction A is exothermic while Reaction B is endothermic Reaction A is endothermic while Reaction B is exothermic Reaction A will most likely be spontaneous while Reaction B is unlikely to be spontaneous O Reaction A releases heat while Reaction B absorbs heat