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Thermodynamic Data at 25 C Substance CH4 (B) (kJmol AHof 74.6 -110.5 AGof 50.5 -137.2 S...
Thermodynamic properties of pure substances Standard thermodynamic quantities for selected substances at 25 ° C listed...
Thermodynamic properties of pure
substances
Standard thermodynamic quantities for selected substances at 25
°
C listed alphabetically by most important atom.
substance
Δ
Hf
°
(kJ/mol)
Δ
Gf
°
(kJ/mol)
S
°
(J/mol∙K)
Aluminum
Al3+ (aq)
---
-485.0
---
Al (s)
0
0
28.3
Al2O3 (s)
-1675.7
-1582.3
50.9
Al(OH)3 (s)
---
-1147.25
---
Bromine
Br− (aq)
---
-104.0
---
Br2 (l)
0
0
152.2
Br2 (g)
30.9
3.1
245.5
HBr (g)
-36.3
-53.4
198.7
Calcium
Ca2+ (aq)
---
-553.6...
#6-9 6. Calculate the enthalpy change for the reaction given below, using thermodynamic tables in your...
#6-9
6. Calculate the enthalpy change for the reaction given below, using thermodynamic tables in your book (Appendix 2): CH(g)+02(B) HO(g) + CO,(g) (not balanced) 7. Calcium carbonate decomposes at high temperature to form carbon dioxide and calcium oxide: CaCO3 CO2+ CaO Using data from the textbook (Apendix 2), determine the heat of reaction. 8. When potassium chloride reacts with oxygen under the right conditions, potassium chlorate is formed: 2 KCI+3 02 2KCIO3 Using data from the textbook (Appendix 2),...
Calculate the standard change in Gibbs free energy for the reaction at 25 °C. Standard Gibbs...
Calculate the standard change in Gibbs free energy for the reaction at 25 °C. Standard Gibbs free energy of formation values can be found in this table. 6 Cl(g)+2 Fe,O,(s)4 FeCl, (s)+30,(g) kJ/mol AGn= Thermodynamic Properties at 298 K Organic Compounds AG kJ/mol /(mol-K) дне kJ/mol Substance Name Formula дне kJ/mol Ag(s) Ag (aq) Ag20(s) Ag2S(s) AgBr(s) AgC(s) Agl(s) AgNO3(s) Al(s) Al2O3(s) AICI3(s) 0 42.6 105.8 77.107 73.4 Methane CH4(9) СHа(о) -74.6) -84.0 -103.8 -11.2 -31.1 121.3 Ethane -32.6 -40.7...
help with the following combustion reaction. shown are the tables and answer. I am confused with...
help with the following combustion reaction. shown are the
tables and answer. I am confused with the steps to get there.
2. (a) For ethanol, CH3CH2OH, AfHº = -277.7 kJ/mol at 25 °C. Using other AfHº values from Appendix A (Table 4.1) of your text, determine the enthalpy (heat) of combustion of liquid ethanol. (b) Determine the temperature change expected when 2.07 g of ethanol are burned in a bomb calorimeter whose heat capacity (as previously measured) is 9007 J/K...
(7 pts.) Calculate the heat absorbed when 4.20 g of H2 are produced according to the...
(7 pts.) Calculate the heat absorbed when 4.20 g of H2 are produced according to the following equation. CH3OH (g) → CO(g) + 2 H2(g) AH = 90.2 kJ (7 pts.) When one adds 1.475 kJ of heat energy to a sample of gold, the temperature goes from 12.5 °C to 84.6 °C. Calculate the mass of the sample of gold. Gold has a specific heat capacity of 0.129 J/g.°C. (6 pts.) 10. Write the thermochemical equation for the standard...
(6 pts.) 1. The air pressure in the inner tube of a tire on a typical...
(6 pts.) 1. The air pressure in the inner tube of a tire on a typical racing bike is held at a pressure of 115 psi (pounds! per square inch). Convert this pressure to atm and mm Hg. (3 pts. each) The atmospheric pressure is 0.978 atm. Determine the pressure of the enclosed gas in each of the cases depicted below. Gas Gas (6 pts.) 3. A 5.90 L bottle contains 1070 g of oxygen at 25.0°C. Calculate the pressure...
Thermodynamic properties of pure
substances
Standard thermodynamic quantities for selected substances at 25
°
C listed alphabetically by most important atom.
substance
Δ
Hf
°
(kJ/mol)
Δ
Gf
°
(kJ/mol)
S
°
(J/mol∙K)
Aluminum
Al3+ (aq)
---
-485.0
---
Al (s)
0
0
28.3
Al2O3 (s)
-1675.7
-1582.3
50.9
Al(OH)3 (s)
---
-1147.25
---
Bromine
Br− (aq)
---
-104.0
---
Br2 (l)
0
0
152.2
Br2 (g)
30.9
3.1
245.5
HBr (g)
-36.3
-53.4
198.7
Calcium
Ca2+ (aq)
---
-553.6...
#6-9
6. Calculate the enthalpy change for the reaction given below, using thermodynamic tables in your book (Appendix 2): CH(g)+02(B) HO(g) + CO,(g) (not balanced) 7. Calcium carbonate decomposes at high temperature to form carbon dioxide and calcium oxide: CaCO3 CO2+ CaO Using data from the textbook (Apendix 2), determine the heat of reaction. 8. When potassium chloride reacts with oxygen under the right conditions, potassium chlorate is formed: 2 KCI+3 02 2KCIO3 Using data from the textbook (Appendix 2),...
Calculate the standard change in Gibbs free energy for the reaction at 25 °C. Standard Gibbs free energy of formation values can be found in this table. 6 Cl(g)+2 Fe,O,(s)4 FeCl, (s)+30,(g) kJ/mol AGn= Thermodynamic Properties at 298 K Organic Compounds AG kJ/mol /(mol-K) дне kJ/mol Substance Name Formula дне kJ/mol Ag(s) Ag (aq) Ag20(s) Ag2S(s) AgBr(s) AgC(s) Agl(s) AgNO3(s) Al(s) Al2O3(s) AICI3(s) 0 42.6 105.8 77.107 73.4 Methane CH4(9) СHа(о) -74.6) -84.0 -103.8 -11.2 -31.1 121.3 Ethane -32.6 -40.7...
help with the following combustion reaction. shown are the
tables and answer. I am confused with the steps to get there.
2. (a) For ethanol, CH3CH2OH, AfHº = -277.7 kJ/mol at 25 °C. Using other AfHº values from Appendix A (Table 4.1) of your text, determine the enthalpy (heat) of combustion of liquid ethanol. (b) Determine the temperature change expected when 2.07 g of ethanol are burned in a bomb calorimeter whose heat capacity (as previously measured) is 9007 J/K...
(7 pts.) Calculate the heat absorbed when 4.20 g of H2 are produced according to the following equation. CH3OH (g) → CO(g) + 2 H2(g) AH = 90.2 kJ (7 pts.) When one adds 1.475 kJ of heat energy to a sample of gold, the temperature goes from 12.5 °C to 84.6 °C. Calculate the mass of the sample of gold. Gold has a specific heat capacity of 0.129 J/g.°C. (6 pts.) 10. Write the thermochemical equation for the standard...
(6 pts.) 1. The air pressure in the inner tube of a tire on a typical racing bike is held at a pressure of 115 psi (pounds! per square inch). Convert this pressure to atm and mm Hg. (3 pts. each) The atmospheric pressure is 0.978 atm. Determine the pressure of the enclosed gas in each of the cases depicted below. Gas Gas (6 pts.) 3. A 5.90 L bottle contains 1070 g of oxygen at 25.0°C. Calculate the pressure...
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