.For the reaction 2NO(g) + O 2 (g) ® 2NO 2 (g) if initially P(NO) = 1.5 atm, P(O
ID: 522150 • Letter: #
Question
.For the reaction 2NO(g) + O2(g) ® 2NO2(g) if initially P(NO) = 1.5 atm, P(O2) = 1.4 atm, and P(NO2) = 2.0 atm, calculate DG for this reaction at 25°C. The following data is valid at 25°C:
PLEAS EXPLAIN!!! 13 & !4
13. For the reaction 2NO(g) O2(g) 2NO20g if initially PONO) 1.5 am, POO 2) 1.4 at PONO2) 0 atim, calculate AG for this reaction at 250C. The following data is valid AG (kJ/mol NO 86.7 51.8 NO2 A) -69.9 kJ/mol D) 79.9 kJ/mol B) -69.2 kJ/mol. E) 35.0 kJ/mol. C) 522.1 kJ/mol 14. The oxidation number of Sin K2SO4 is A) +6 BOnt4 C) +2 D) 1 E) None of the above 15. Calculate the AGO using the following informationExplanation / Answer
13.
Dg0 reaction = dG 0 Prodcut – dG 0 recants
= 2* 51.8 ) – (2*86.7 + 0.0)
= 103.6- 173.4
=- 69.8 KJ/ mole
= -69800 J / mole
Reaction quotient Q = P(NO2)^2/P(NO)^2.P(O2)
= 2.0 ^2/(1.5^2 x 1.4 )
=4/ 3.15
= 1.27
Molar gas constant R = 8.314 x 10^(-3) kJ/mol.K
Temperature T = 25 deg C = 298.15 K
DG = DGo + RT ln Q
= -69.800 KJ / mole + 8.314 x 10^(-3) x 298.15 x ln(1.27)
== - 69.800 KJ / mole + 8.314 x 10^(-3) x 298.15 x(0.239)
= -69.2 kJ/mol
14.
Assume that the oxidation number of S is X.
+1*2 +X + 4*(-2)=0
2+X -8=0
X=+6
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