Homework Answers
A)
DS0rxn = (1*S0,NO2 + 1*S0,N2O)-(3*S0,NO)
= (239.9+210.65)-(219.7)
= 230.85 j/mol.k
B)
DH0rxn = (2*DH0f,H2O + 2*DH0f,CO2)-(2*DH0f,CH3OH+3*DH0f,O2)
= (2*-241.826+2*-393.5)-(2*-201.2+3*0)
= -868.25 Kj/mol
dS0rxn = (2*S0f,H2O + 2*S0f,CO2)-(2*S0f,CH3OH+3*S0f,O2)
= (2*188.72+2*213.7)-(2*238+3*205)
= -286.16 j/mol.k
dg0 = DH0-TDS0
= (-868.25)-(273.15*-286.16)
= 77.3 kj/mol
Add Answer to:
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Here are the delta H, delta S and delta G values from my textbook: (first value...
Here are the delta H,
delta S and delta G values from my textbook: (first value is delta
H, second value is delta S, third is delta G)
CO2: -393.5 , 213.6 , -394.4
CH4: -75, 186, -51
CO : -110.5 , 197.9 , -137.3
CH3COOH : -484.2 , 159.8 , -389.45
CH3OH : -238 , 126.8 , -166.3
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For each chemical reaction listed in the first column of the table below, predict the sign (positive or negative) of the reaction entropy Δ% ' If it's not possible to decide with the information given, check the "not enough information" button in the last column. Note for advanced students: Assume the temperature remains constant. Assume all gases and solutions are ideal. reaction sign of reaction entropy 2CH,OH(e) +302()2CO2) 4H20)>0 not enough information. Caci, (ag) + Na,co, (aq) → Caco, (s)...
Practice with Hess's Law and Standard Heats of Formation 1. (Example) The reaction C2H4 (g) + 6 F2 (g) → 2 CF4(g) + 4 HF (g) can be written as the sum of: C2H4 (9) ► 2 C(s) + 2 H2 (g) AH = -52.3 kJ/mol 2 C(s) + 4 F2 (9) ► 2 CF4(9) AH = -1360 kJ/mol 2 H2(g) + 2 F2 (g) → 4 HF (a) AH = -1074 kJ/mol C2H4(g) + 6 F2(g) → 2 CF4(g)...
Here are the delta H,
delta S and delta G values from my textbook: (first value is delta
H, second value is delta S, third is delta G)
CO2: -393.5 , 213.6 , -394.4
CH4: -75, 186, -51
CO : -110.5 , 197.9 , -137.3
CH3COOH : -484.2 , 159.8 , -389.45
CH3OH : -238 , 126.8 , -166.3
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1) Find the AH of the following reaction: C(s) + O2(g) à CO2(g) Given the following data: Sro(s) + CO2(g) à SrCO3(s) 2Sro(s) à 2Sr(s) +0,(8) AH = -234 kJ AH = +1184 kJ 2SCO,(s) à 25r(s) + 2C(s) + 302(g) AH = +2440 kJ 2) Find the AH of the following reaction: 3NO,(g) + H2O(l) à 2HNO,(aq) + NO(g) Given the following data: 2NO(g) + O2(g) à 2NO(g) AH=-116 kJ 2N2(g) + 502(g) + 2H2O(l) à 4HNO3(aq) AH =...
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