# Gibbs Free Energy

### Topic Page

Gibbs Free Energy### Questions

- Can gibbs free energy be negative?
- How do enzymes affect gibbs free energy?
- How is Gibbs Free Energy calculated?
- How is gibbs free energy related to enthalpy and entropy?
- Why does gibbs free energy decrease with temperature?
- Why is Gibbs free energy important?
- Why does Gibbs free energy have to be negative?
- Is Gibbs free energy affected by a catalyst?
- How can I calculate Gibbs free energy at different temperatures?
- How is Gibbs free energy measured?
- How does partial pressure affect Gibbs free energy?
- How does Gibbs free energy relate to spontaneity?
- How does k affect Gibbs free energy?
- How does Gibbs free energy change relate to work?
- How does concentration affect Gibbs free energy?
- Does the following reaction show an increase or decrease in entropy? N2(g) + 3 H2(g) ---> 2 NH3(g)
- How do you calculate Gibbs free energy change?
- Does the following reaction show an increase or decrease in entropy? KCLO3(s) ---> 2KCL(s) + 3O2(g)
- How can I explain standard molar Gibbs free energy?
- Will a reaction with a negative ΔH° be spontaneous?
- Does Gibbs free energy affect the reaction rate?
- What are some common mistakes students make with Gibbs free energy?
- What are some examples of Gibbs free energy?
- How does partial pressure affect Gibbs free energy?
- Question #658ea
- Question #271f2
- Question #bf8e9
- Question #27212
- Question #7b856
- Question #dde3a
- Question #ca68e
- Question #c8f95
- Question #2f052
- The reaction #"HCl(c) + NH"_3(g) ⇌ "NH"_4"Cl(s)"# is spontaneous only at low temperatures. What are the answers to the following questions?
- Question #ad335
- Question #04ff1
- Question #f1f6e
- Fora particular reaction, ΔH = 120.5 kJ and ΔS = 758.2 J/K. What is ΔG for this reaction at 298 K?
- Question #5b2e7
- How do you begin from the Gibbs-Helmholtz equation to determine the new temperature at which a reaction ceases to become spontaneous? What fundamental assumptions are involved?
- Question #57ef8
- Question #b62d7
- Question #e90b5
- Question #ba099
- Question #a146a
- What is the Std. Gibbs free energy change and max. work obainable for reacion? Cu^2+ + Zn ---->Zn^2 + Cu Given- E for Cu^2/Cu = 0.34 V, E for Zn^2/Zn = -0.76 V, F = 96500 V
- Question #d0b88
- Question #b5376
- What is the standard Gibbs free energy for this reaction? In kJ/mol At what temperature T_eq do the forward and reverse rusting reactions occur in equilibrium? In Kelvin?
- An interaction between two subunits of a protein was determined to have a delta G of -57.05 kj/mol. What is the Keq for the reaction at 25 degrees celsius?
- How do you calculate the change in Gibbs free energy (∆G) for the following reactions at 25 °C?
- What are Helmholtz free energy and Gibbs free energy?
- Question #fec87
- What is Gibbs energy?
- Why is the change in Gibbs energy negative?
- Is Gibbs energy negative?
- Why is Gibbs free energy useful?
- How can the Gibbs energy change of a reaction relate to entropy and enthalpy?
- How do you measure Gibbs free energy?
- How does Gibbs energy of a reaction relate to entropy and enthalpy?
- Does pH affect Gibbs free energy?
- Does pressure affect Gibbs free energy?
- How do you calculate Gibbs free energy from equilibrium constant?
- How do you calculate Gibbs free energy of mixing?
- What does Gibbs free energy depend on?
- What does Gibbs free energy mean?
- What does Gibbs free energy tell us?
- Why is Gibbs free energy negative?
- Why is Gibbs free energy zero at equilibrium?
- Why is Gibbs free energy 0 at boiling point?
- Why is Gibbs free energy 0 at equilibrium?
- Why is Gibbs free energy 0 at phase change?
- What is the Gibbs' free energy of formation for #"O"_2(g)#?
- Question #b08e1
- In the Gibbs energy equation is "s" the symbol for entropy?
- Question #baa36
- Given the equation N2 + 3F2 --> 2NF3 and the values of deltaH (-264 kJ/mol) and deltaS (-278 J/mol K), what is the standard free energy change for this reaction? B) Use the rxn and table (below) to calculate the average enthalpy of the F-F bond.
- What is the standard state free energy for this reaction?
- Question #34319
- What is #DeltaG# for a solid melting at its normal melting point?
- The reaction #2 "Mg"(s) + "O"_2(g) -> 2 "MgO"(s)# has a free energy #DeltaG_"rxn" = -"597 kJ/mol"# under standard conditions. What is the free energy of formation of #"MgO"#?
- Gold ions form complexes with cyanide ion according to the equation: #"Au"^(+)(aq) + 2 "CN"^(-) -> ["Au"("CN")_2]^(-)#; #K_f = 2xx10^38# What is the standard state free energy for this reaction?
- Another Thermo Question?
- How to determine a temperature on which process is spontaneous by using function of Gibbs free energy?
- What is Gibbs free energy? How is Gibbs free energy calculated?
- Explain why the entropy increased when the enzyme binds to the substrate? I thought binding to the substrate would reduce the entropy because it is more ordered?
- Question #dcd39
- Question #03712
- Question #2f1c1
- Given that #DeltaG# for the reaction #4NH_(g) + 5O_2(g) -> 4NO(g) + 6H_2O(g)# is -957.9 kJ, what is #DeltaG)f# of #H_2O#?
- Question #23e6d
- Question #23633
- How many liters of ozone can be destroyed at 220. K and 5.0 kPa if 200.0 g of chlorine gas react with it?
- What is K if #DeltaG^@# = -18.0 kJ for a reaction at 25 degrees C?
- How do you calculate #DeltaG# for a reaction from #DeltaH# and #DeltaS# values?
- Question #6f577
- Fe2+(aq)|Fe(s) -0.44 V and Zn2+(aq)|Zn(s) -0.76 V and Cr3+(aq)|Cr(s) ‑0.74 V and Cu2+(aq)/Cu(s) +0.34 V. Calculate the standard free energy change: Fe2+(aq) + Cr(s) ---> Fe(s) + Cr3+(aq)?
- Question #454d0
- Using Ellingham diagram,how to determine that in between C and CO which is better reducing agent?
- For #A + B rightleftharpoons C#, the #DeltaG_f^@# are #"402.0 kJ/mol"#, #"387.7 kJ/mol"#, and #"500.8 kJ/mol"#, respectively. What is #DeltaG_(rxn)^@#? If both entropy and enthalpy changes are positive for this reaction at #25^@ "C"#, which one drives it?
- How is #K_(eq)# related to #DeltaG^@#?
- Question #cef43
- How do you calculate the Gibbs' free energy of mixing?
- Question #496a7
- Question #199e5
- Calculate #DeltaS^Theta# at #25^circC#?
- Calculate the standard free energy change for the below reaction at 25 degrees Celsius?
- What is #\DeltaS# for the below phase change if #\DeltaH# is 6010 #"J"/"mol"# at STD conditions?
- For the following reaction run at 800 K, a mixture at equlibrium contains #P_(N_2)=0.0040# atm, #P_(H_2)=0.063# atm, and #P_(NH_3)=0.48# atm. Calculate #\DeltaG^o# at 800 K?
- Calculate #P_{SO_2}# at equilibrium at 298 K?
- Find #\DeltaG°_"rxn"# for the following by using Hess's law with known reactions?
- If #\tt{\DeltaG°_(f,NO_2(g))=31.3" kJ"//"mol"}# and #\tt{\DeltaG°_(f,NO(g))=86.6" kJ"//"mol"}# at 298 K, then calculate #\tt{K_p}# at 298 K?
- Use the standard cell potential to calculate the free energy change for the cell reaction under standard conditions?