
Metal oxides can be reduced with hydrogen gas to give the metal. H2(g) ZnO(s) H2O(g) +Zn(s)...
Methane can react with water to form carbon dioxide and hydrogen according to the following equation: CH4(g) + 2H2O(g) ↔ CO2(g) + 4H2(g) Use the following thermodynamic data at 298 K to determine the temperature at which the reaction goes from being spontaneous to nonspontaneous. Substance CH4(g) H2O(g) CO2(g) H2(g) ΔHºf (kJ/mol) -74.87 -241.8 -393.5 0 ΔGºf (kJ/mol) -50.81 -228.6 -394.4 0 Sºf (J/Kmol) 186.1 188.8 213.7 130.7
Determine the value of AG for the following reaction: Fe2O3 (s) + 3 H2(g) → 2 Fe(s) + 3 H2O(g) Fe2O3(s) H2(g) Fe(s) H2O(g) AHf (kJ/mol) -824.2 0 0 -241.8 Sº (J/K mol) 87.4 130.6 27.3 188.8
Use the following data to calculate the value of ΔG°rxn at 298 K for the reaction described by the given chemical equation. Include the units. Compound S°f (J/molK) DH°f (kJ/mol) CO (g) 197.7 –110.5 H2 (g) 130.7 0 CH4 (g) 186.3 –74.6 H2O (g) 188.8 –241.8 CO (g) + 3H2 (g) → CH4 (g) + H2O (g) I got -141.9 KJ/mol, but i think the units are wrong and I don't know why.
2. For the following example, identify the following.
H2O(l) → H2O(s)
question 2 options
a negative ΔH and a negative ΔS
a positive ΔH and a negative ΔS
a negative ΔH and a positive ΔS
a positive ΔH and a positive ΔS
It is not possible to determine without more information.
3. Calculate ΔS°rxn for the following reaction. The S° for each
species is shown below the reaction.
C2H2(g) + H2(g) →
C2H4(g)
S°(J/mol∙K) 200.9 130.7 219.3
Question 4 options:...
Calculate the ΔG°rxn using the following information. 2 H2S(g) + 3 O2(g) → 2 SO2(g) + 2 H2O(g) ΔG°rxn = ? ΔH°f (kJ/mol) -20.6 -296.8 -241.8 S°(J/mol∙K) 205.8 205.2 248.2 188.8
Ethanol (C2H5OH) can be prepared by many different reactions including the two shown below: (2.1) C2H4 (g) + H20 (g) + C2H5OH (1) (2.2) C2H6 (g) + H20 (g) → C2H5OH (1) + H2 (g) Using the thermodynamic data below, calculate the change in the Gibbs free energy (in units of kJ) for reaction 2.1 at 298.15 K. AG; (kJ/mol) Sº (J/mol.K) 0 H2 (g) H2O (g) C2H5OH (1) C2H4 (g) -228.6 -174.9 68.0 AH; (kJ/mol) 0 -241.8 -277.7 52.5...
Consider the reaction 2 CO2(g) +5 H2(e) C H2(e) + 4H2O(g) Using the standard thermodynamic data in the tables linked above, calculate the equilibrium constant for this reaction at 298.15K ANSWER: Submit Answer Retry Entire Group more group attempts remaining AH,(kJ/mol) AG® (kJ/mol) Sº (J/mol K) -238.7 -116.0 126.8 219.0 -363.0 249.0 135.1 -166.3 -110.0 -351.0 125.0 209.2 68.2 - 129.0 202.0 226.7 200.9 52.3 - 166.0 -53.0 -277.7 219.6 250.0 242.0 160.7 -13.0 -235.1 282.7 Carbon CH3OH (1) H2CO...
24. Consider the combustion of hydrogen given below H2(g) + ½Og(g) H2O(g) ΔH =-241.8 kJ/mol → What is the enthalpy change, in kJ, when the reaction is started with 52.5 g of H2 and 52.5 g of O2? A) -793 kJ B) -537 k C) -192 k D) -645 kJ E) 564 kl
Calculate ΔH° in kJ/mol for the reaction of 2-butene vapor with
hydrogen gas to form butane gas. Be sure to balance the reaction
using the lowest whole numbers
95 96 97 98 99 100 C_H(g, cyclobutane) C_H(g, 2-butene) C4H10 (1, butane) C4H10 (g, butane) C3H10 (1, cyclopentane) C3H10 (g, cyclopentane) 26.7 -11.2 -147.3 –125.7 -105.8 -77.2 101 C3H10 (g, 1-pentene) 102 C3H10 (g, 2-pentene) AH° (kJ/mol) -20.9 -31.8 102 Cu 10 3 Hydrogen O. 0 203.2 218.0 1536.2 1503.8 0...
AHºf (kJ/mol) AG°f (kJ/mol) Sº (J/mol K) 0 0 130.7 Hydrogen H2 (g) H (g) H' (g) H+ (aq) 218.0 203.2 114.7 1536.2 0 -230.0 -157.0 -11.0 -285.8 -237.1 69.9 OH(aq) H20 (1) H20 (g) H2O2 (1) -241.8 -228.6 188.8 -187.8 -120.4 109.6 Iodine AH.(kJ/mol). | AGO. (k.I/mol) go (I/mol K | -53.0 -13.0 242.0 -277.7 -174.8 160.7 282.7 -235.1 -484.0 160.0 C2H40 (g, ethylene oxide) CH3CH2OH (1) CH3CH2OH (g) CH3COOH (1) C2H6 (g) C3H6 (g) CzH; (g) CH2=CHCN (1)...