# chemistry

I have to find delta G from a problem.
Not the standard free energy, from the change in engery. So this delta G does not have the degree sign above.

The equation i used was deltaG=standard G+RTlnQ

If deltaG was a positve number, what does that tell me.

I know that if the standard free energy is a positive number, it tells me that the reaction is not a product favored. So whats the difference between standard free energy and the change in free energy.

1. 👍 0
2. 👎 0
3. 👁 245
1. If I understand the question, the standard free energy, delta G^o, is the free energy of formation from the elements at 25 C. The free energy of a reaction is the free energy of the products minus the free energy of the reactants.

1. 👍 0
2. 👎 0
posted by DrBob222

## Similar Questions

1. ### College Chemistry

I was asked to find delta Grxn for the equation I2+Cl2--->2ICl. Was given information to solve for Q (PICl= 2.55atm, PI2=0.315, PCl2=0.216), i ended up with 4.4588. Then I solved for the standard G rxn by: Delta G= (-10.9*2)-

asked by Mel on April 7, 2010
2. ### Chemistry

Give the enthalpy change and entropy change values shown below calculate the free energy change for this reaction at 25 degrees C using Gibbs free energy equation. How does this value compare to the free energy change using the

asked by Christian on May 16, 2007
3. ### Chemistry

delta G reaction = delta G products - delta G reactants. Hydrogen peroxide is used as a bleachin agent, a disinfectant and medicinally as a topical antibacterial agent. Hydrogen peroxide decomposes according to the reacton

asked by DrBob222 on May 15, 2007
4. ### Chemistry

At 25 °C, the equilibrium partial pressures for the following reaction were found to be PA = 4.10 bar, PB = 5.60 bar, PC = 1.20 bar, and PD = 9.70 bar. 2A(g)+2B(g)-->C(g)+ 3D(g) What is the standard change in Gibbs free energy of

asked by Alexis on April 25, 2014
5. ### Chemistry

The standard free energy change, delta f G, for the formation of NO (g) from its elements is +86.58 kJ/mol at 25 degrees C. Calculate Kp at this temperature for the equilibrium 1/2 N2(g) + 1/2 O2(g) = NO(g) Comment on the sign of

asked by Sha on April 30, 2014
6. ### Chemistry

The multiple Choice Question: Determine delta G (free energy at standard condition s) for the reaction below, considering Kp = 8 at 25 degrees celcius. 2Ag -> B The answer Choices: A.-2.303 x (0.287) x (25) x log 8 [J] B.-2.303 x

asked by Tommy on April 22, 2007
7. ### Chemistry

For the reaction 2CO2(g) + 5H2(g)C2H2(g) + 4H2O(g) H° = 46.5 kJ and S° = -124.8 J/K The standard free energy change for the reaction of 1.75 moles of CO2(g) at 328 K, 1 atm would be ___ kJ This reaction is (reactant, product)

asked by John on November 19, 2017
8. ### Chemistry

The following standard free energies are given for 25 degrees celcius. 1) N2(g) + 3H2(g)-> 2NH3(g) delta g = -33.0 kJ 2) 4NH3(g) + 5O2(g)-> 4NO(g) + 6H20() delta g = -1010.5 kJ 3) N2(g) + o2(g)-> 2NO(g) delta g = 173.1kJ 4) N2(g)

asked by K on July 6, 2011
9. ### Chemistry

Hydrogen peroxide is used as a bleachin agent, a disinfectant and medicinally as a topical antibacterial agent. Hydrogen peroxide decomposes according to the reacton 2H^2O^2(l)-->2H^2O(l)+o^2(g) A. Given the standard free energy

asked by Christian on May 16, 2007
10. ### AP Chemisty

N2(g)+3F2 yields 2Nf3(g) Delta H(degree)298=-264KJ mol-1;Delta S(degree)298=-278J K-1 mol-1 The following questions relate to the synthesis reaction represented by the chemical equation above. a.)CAlculate the value of the

asked by Jenna on June 7, 2007

More Similar Questions