Chemistry(Please check answers)
posted by Hannah .
1) The standard molar entropy value of N2 (g) is 191.5 J/Kmol,
of O2 (g) is 205.0 J/Kmol and of NO2 (g) is 240.0 J/Kmol. 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!

I remember this from a day or so ago. I think these are the answers I obtained then although I didn't go through them again today. Note you made a typo in calculation of dS. 2*250 you meant to type 2*205. But the answer is ok.