ΔH f f ° = -36.40 kJ/mol and S° = 245.91 J/mol K for CH...
ΔH f f ° = -36.40 kJ/mol and S° = 245.91 J/mol K for CH 3 3 Br, determine the Gibbs free energy in kJ from the ΔH f f ° and S° values for the reaction CH 4 4 + Br 2 2 → CH 3 3 Br + HBr at 298 K. Give only the numerical part of your answer; i.e., don’t include units in your response.
Homework Answers
A) 2PbS(s)+3O2(g)→2PbO(s)+2SO2(g), ΔH∘=−844 kJ, ΔS∘=−165 J/K Express the Gibbs free energy in kilojoules to three significant...
A) 2PbS(s)+3O2(g)→2PbO(s)+2SO2(g), ΔH∘=−844 kJ, ΔS∘=−165 J/K Express the Gibbs free energy in kilojoules to three significant digits. B) 2POCl3(g)→2PCl3(g)+O2(g), ΔH∘=572 kJ, ΔS∘=179 J/K Express the Gibbs free energy in kilojoules to three significant digits. C) At what temperature (if any) would the decomposition of POCl3 become spontaneous? Express the temperature in kelvins to three significant digits. If there is no answer, enter none.
A reaction has a ΔH°= 204.6 kJ and a ΔS°= -19.5 J/K. a. Given the sign...
A reaction has a ΔH°= 204.6 kJ and a ΔS°= -19.5 J/K. a. Given the sign and magnitude of ΔH and ΔS, will the reaction be spontaneous at all temperatures, nonspontaneous at all temperatures? Briefly explain your reasoning. b. Calculate the standard free energy change for the reaction at 298 K. c. Is the reaction spontaneous or nonspontaneous at 298 K?
1. Consider a process at 286 K with ΔH = -72.5 kJ/mol and ΔS = -96.8...
1. Consider a process at 286 K with ΔH = -72.5 kJ/mol and ΔS = -96.8 J/K mol Which of the following is true? ΔG = -44.8 kJ/mol and the process will not be spontaneous ΔG = +39.4 kJ/mol and the process will be spontaneous ΔG = -44.8 kJ/mol and the process will be spontaneous ΔG = -19.1 kJ/mol and the process will not be spontaneous ΔG = +39.4 kJ/mol and the process will not be spontaneous 2. Consider a...
The chemical reaction that causes chromium to corrode in air is given by 4Cr+3O2→2Cr2O3 in which at 298 K ΔH∘r...
The chemical reaction that causes chromium to corrode in air is given by 4Cr+3O2→2Cr2O3 in which at 298 K ΔH∘rxn = −2256 kJ ΔS∘rxn = −549.1 J/K Part A What is the standard Gibbs free energy for this reaction? Assume the commonly used standard reference temperature of 298 K. Express your answer as an integer and include the appropriate units. Part B What is the Gibbs free energy for this reaction at 4717 K ? Assume that ΔH and ΔS...
A certain reaction has ΔH°= -19.5 kJ/mol and ΔS°= +42.7 J/mol K a) Is the reaction...
A certain reaction has ΔH°= -19.5 kJ/mol and ΔS°= +42.7 J/mol K a) Is the reaction exothermic or endothermic? b) Does the reaction lead to an increase or decrease in the disorder of the system? c) Calculate ΔG° for the reaction at 298K. d) Is the reaction spontaneous at 298 K under standard conditions?
Ag2S given DeltaH= -32 kj/mol, DeltaG=-40 kj/mol DeltaS= 146 j/k*mol calculate Gibbs free energy for the...
Ag2S given DeltaH= -32 kj/mol, DeltaG=-40 kj/mol DeltaS= 146 j/k*mol calculate Gibbs free energy for the reaction of dissolving silver sulfide, Ag2S, in water (25 C.) Do the calculations in two ways. Use the standard Enthalpy of formation, deltaH, and entropy S values, and the formula deltaG=deltaH-TdeltaS. Use the standard free energies of formation deltaG and the formula deltaG=deltaG(products)-deltaG(reactants).
Al(OH)3(s) → Al3+(aq) + 3OH−(aq) ΔfH∘/kJ⋅mol−1 −1284 −538.4 −230.02 S∘/J⋅mol−1⋅K−1 85.4 −325 -10.9 Part A...
Al(OH)3(s) → Al3+(aq) + 3OH−(aq) ΔfH∘/kJ⋅mol−1 −1284 −538.4 −230.02 S∘/J⋅mol−1⋅K−1 85.4 −325 -10.9 Part A Compute ΔrS (answer in J⋅mol−1⋅K−1) Part B Compute ΔrG∘ at 298 K (answer in kJ⋅mol−1) Part C Determine the equilibrium constant for the dissolution of Al(OH)3 at 298 K. Part D Determine the Gibbs energy change for the dissolution of Al(OH)3 when the concentrations of Al3+ and OH− are both 2.60×10−7mol⋅L−1.(answer in kJ⋅mol−1) Part E At what temperature will Al(OH)3(s) be at equilibrium with...
The standard change in Gibbs free energy is Δ?°′=7.53 kJ/mol . Calculate Δ? for this reaction...
The standard change in Gibbs free energy is Δ?°′=7.53 kJ/mol .
Calculate Δ? for this reaction at 298 K when [dihydroxyacetone
phosphate]=0.100 M and [glyceraldehyde-3-phosphate]=0.00600 M .
Thank you!
For the aqueous reaction CH2OH Н— —он SO CH-0–_0 CH -0 - 0- dihydroxyacetone phosphate = glyceraldehyde-3-phosphate the standard change in Gibbs free energy is AGⓇ' = 7.53 kJ/mol. Calculate AG for this reaction at 298 K when [dihydroxyacetone phosphate) = 0.100 M and [glyceraldehyde-3-phosphate] = 0.00600 M AG = kJ/mol
1)For the process Ao → Ag) , the AHwR = 30.5 kJ/mol and ASm"-86.4 J/molK. Assuming...
1)For the process Ao → Ag) , the AHwR = 30.5 kJ/mol and ASm"-86.4 J/molK. Assuming these values are independent of T, what is the normal boiling point of substance A in °C? Do not input the unit just numerical value (the number). 2) For a certain process at 355 K, ΔG =-12.4 kJ and ΔH--72 kJ. What is the change in entropy,AS, for this process? 3)Consider the following hypothetical reaction (at 310 K). Standard free energies. AGP, in kJ/mol...
A reaction has and △H°298 = 106 kJ/mol and △S°298 = 326 J /mol K at...
A reaction has and △H°298 = 106 kJ/mol and △S°298 = 326 J /mol K at 298 K. Calculate △G in kJ/mol.
The standard change in Gibbs free energy is Δ?°′=7.53 kJ/mol .
Calculate Δ? for this reaction at 298 K when [dihydroxyacetone
phosphate]=0.100 M and [glyceraldehyde-3-phosphate]=0.00600 M .
Thank you!
For the aqueous reaction CH2OH Н— —он SO CH-0–_0 CH -0 - 0- dihydroxyacetone phosphate = glyceraldehyde-3-phosphate the standard change in Gibbs free energy is AGⓇ' = 7.53 kJ/mol. Calculate AG for this reaction at 298 K when [dihydroxyacetone phosphate) = 0.100 M and [glyceraldehyde-3-phosphate] = 0.00600 M AG = kJ/mol
1)For the process Ao → Ag) , the AHwR = 30.5 kJ/mol and ASm"-86.4 J/molK. Assuming these values are independent of T, what is the normal boiling point of substance A in °C? Do not input the unit just numerical value (the number). 2) For a certain process at 355 K, ΔG =-12.4 kJ and ΔH--72 kJ. What is the change in entropy,AS, for this process? 3)Consider the following hypothetical reaction (at 310 K). Standard free energies. AGP, in kJ/mol...
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