The forward and reverse rate constants for the gas-phase reaction C2H5(g) + HBr(g) → C2H6(g) +...
The gas phase reaction Cl(g) + HBr(g) → HCl(g) + Br(g) has an overall enthalpy change of -66 kJ. The activation energy for the reaction is 7 kJ. What is the activation energy for the reverse reaction? Can someone explain to me why this would -73?
TABLE 7.2 Some Standard Molar Enthalpies of Fa AcHº at 298.15 K Substance kJ/mola Substance CO(g) CO2(g) CH4(g) C2H2(g) C2H4(g) C2H6(g) C3H8(g) C4H10(g) CH3OH(1) C2H5OH(1) HF(g) HCl(g) -110.5 -393.5 - 74.81 226.7 52.26 -84.68 - 103.8 – 125.6 –238.7 –277.7 -271.1 -92.31 HBr(g) HI(g) H2O(g) H2O(1) H2S(g) NH3(g) NO(g) N2O(g) NO2(g) N204(8) SO2(g) SO3(g) aValues are for reactions in which one mole of substance is formed. M been rounded off to four significant figures. (Reference to Equation 7.22): A Hº...
For a gaseous reaction, standard conditions are 298 K and a partial pressure of 1 bar for all speies. For the reactionC2H6(g)+H2(g)↽−−⇀2CH4(g)the standard change in Gibbs free energy is Δ𝐺∘=−32.8 kJ/mol.ΔG°=−32.8 kJ/mol. What is ΔG for this reaction at 298 K when the partial pressures are 𝑃C2H6=0.400 bar,𝑃H2=0.150 bar, and 𝑃CH4=0.850 bar?𝑃CH4=0.850 bar? Δ𝐺=_____ kJ/molSk
For the reaction 2 HBr(g) + Cl_2(g) rightarrow 2 HCl(g) + Br_2(g) a. Write the equilibrium constant expression for the reaction. b. Using the following G degree values, calculate Delta G degree for the reaction. HBr(g) = -53.22 kJ/mol HCl(g) = -95.27 kJ/mol Cl_2(g) = 0 kJ/mol Br_2(g) = 3.14 kJ/mol c. Calculate the equilibrium constant K_eq be at 298 K. d. Does this equilibrium lie more with reactants or products?
Acetylene, C2H2, can be converted to ethane, C2H6, by a process known as hydrogenation. The reaction is C2H2(g)+2H2(g)?C2H6(g) Given the following data, what is the value of Kp for this reaction? Substance ?G?f (kJ/mol) C2H2(g) 209.2 H2(g) 0 C2H6(g) ?32.89 In Part A, we saw that ?G?=?242.1 kJ for the hydrogenation of acetylene under standard conditions (all pressures equal to 1 atm and the common reference temperature 298 K ). In Part B, you will determine the ?G for the...
1) The rate constant for the reaction 2 N,Os(9) = 4 NO (9) + O2(9) is reported in units of sl. What is the overall order of the reaction? 2) The rate law for a reaction was reported as rate=k[A] [B][C] with molar concentrations in moles per cubic decimetre and time in seconds. What are the units of k? 3) The rate constant for the pseudo first-order acid- catalysed hydrolysis of glucose is 4.07' 10-s. Calculate the half-life for the...
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(3) For reaction: CH. (g) + 3Cl2(g)at CHCh 01)+3weg). the forward direction has Al603 kJ; and the data below show the of formation, Δ Ge, for each substance at 298-K AG (KJ/mol CH (g) Clh (g) CHCb ( HCI (g) -51 0 -74 -95 (a) Calculate the reaction ΔGo at 298 oK. (b) At standard condition, is the forward reaction spontaneous? And why (c) Calculate the equilibrium constant K1 at 298 °K (d) Calculate the equilibrium constant K2 at...
When ΔG ̊=0, the system is at equilibrium and both the forward
and reverse reaction are proceeding at equal rates. This is the
case during phase transitions. Consider the phase transition and
the data shown for BCl3 below. Calculate the boiling point (in ̊C)
for BCl3. BCl3(l) ⇄ BCl3(g) Hf ̊ (kJ/mole) S ̊ (J/mol∙K) BCl3(l)
-418 209 BCl3(g) -395 290
4. When AG°=0, the system is at equilibrium and both the forward and reverse reaction are proceeding at equal...
Consider the reaction: 2HBR(g) >H2(g) + Br2() Using standard thermodynamic data at 298K, calculate the free energy change when 1.51 moles of HBr(g) react at standard conditions AG° kJ rxn AHof (kJ/mol) AG°F (kJ/mol) s° (J/mol K) Beryllium Вe(s) 0 9.5 -569.0 ВeO(s) -599.0 14.0 Be(ОН)2(s) -902.5 -815.0 51.9 AH°f (kJ/mol) AG°f (kJ/mol) s° (J/mol K) Bromine Br(g) 111.9 175.0 82.4 Br2() 152.2 0 0 Br2(g) 30.9 3.1 245.5 Br2(aq) -3.0 4.0 130.0 -121.0 -175.0 82.0 Br (aq) BrF3(g) -255.6...
The reaction 2 NO2(g) → 2 NO (g) + O2(g) has rate constants of 2.70 x 10-2 M-1s-1 at 227 oC and 0.240 M-1s-1 at 277oC. What is the activation energy of this reaction? (Given: Arrhenius equation, k = Ae-Ea/RT ) A) 99.6 kJ/mol B) 22.8 kJ/mol C) 49.8 kJ/mol D) -22.8 kJ/mol E) 65.3 kJ/mol I'm unsure on how to do it since you're not given the frequency factor