Posted by **Hannah** on Monday, April 23, 2012 at 5:35pm.

1) The standard molar entropy value of N2 (g) is 191.5 J/K-mol,

of O2 (g) is 205.0 J/K-mol and of NO2 (g) is 240.0 J/K-mol. From these values we can calculate the Delta So for the reaction N2 (g) + 2 O2 (g)-> 2 NO2 (g) to be?

I did products - reactants

(240 X 2) - [191.5 + (250 X 2)]

480 - 601.5 = -121.5

The delta S is -121.5

2) Calculate the value of delta Go for the reaction , given the standard free energies of formation listed below each ion.

Ag(SO3)_2^3- -> Ag^+ + 2SO3^2-

delta Gfo, kJ/mol for Ag(SO3)_2^3- is -943 , for Ag^+ it is +77 and for 2SO_3^2- it is -497.

I did products - reactants

[(-497 X 2) + 77] - (-943)]

-917 - (-943) = 26

The delta g is +26.

Are my answers correct? Thank you!

## Answer this Question

## Related Questions

- chemistry - The standard molar entropy value of N2 (g) is 191.5 J/K-mol, of O2 (...
- chemistry - 3. Calculate the standard entropy change for the reaction: N2 + 3H2...
- chemistry, please help - 2NO2(g)--> 2NO(g) + O2(g) , H=+114.2kJ (Note: H, S, ...
- AP Chemistry - Calculate the standard entropy change for the dimerization of NO2...
- Chemistry - Calculate the entropy change in the surroundings when 1.00 mol N2O4(...
- Chem (Thermodynamics) - The standard molar enthalpy of fusion and the standard ...
- Chemistry - Using data in table below and S °(NaCl(s))= 72.38 J·mol-1·K-1, ...
- Chemistry - Using data in table below and S °(NaCl(s))= 72.38 J·mol-1·K-1, ...
- Chemistry - Using data in table below and S °(NH3(g))= 192.5 J·mol-1·K-1, ...
- chemistry-please check my work - Determine the mass of carbon monoxide that is ...

More Related Questions