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Question 7 0.5 pts Determine the sign of ASsur and ASsys for the following chemical reaction...
7. Consider the following reaction: H,(8)+CO,(8)=1,0(g)+CO(g) The value of the equilibrium constant K, for the reaction...
7. Consider the following reaction: H,(8)+CO,(8)=1,0(g)+CO(g) The value of the equilibrium constant K, for the reaction is 0.534 at 700°C. What is the value of K, for this reaction at 298 K? (5 points) (AH; (H20) = -241.8, AH;(CO) = -110.5, AH;(CO2) = -393.5 kJ/mol)
Question 29 (9 points) Consider the following reaction: 3C(s) + 4H2(g) → C3H8(8); AH° =-104.7 kJ;...
Question 29 (9 points) Consider the following reaction: 3C(s) + 4H2(g) → C3H8(8); AH° =-104.7 kJ; ASP = -287.4J/K at 298 K 1). What is AGⓇ for this reaction? 2). What is the equilibrium constant at 400.0 K for this reaction?
7 Consider the following reaction at 298 K: NH3(g) +HCI(g)NH4CI(s) Using the thermochemical data at 298 K given below (a) Determine the AH for the reaction. (2 marks) (b) Determine the AG for the...
7 Consider the following reaction at 298 K: NH3(g) +HCI(g)NH4CI(s) Using the thermochemical data at 298 K given below (a) Determine the AH for the reaction. (2 marks) (b) Determine the AG for the reaction and comment on its value. (3 marks) (c) Determine the maximum work done available in the reaction. (3 marks) An equilibrium mixture, consisting of 0.5 atm of NHy(), 0.5 atm of HCKg) and excessive of NH Cl(s), is enclosed in a container at 298 K...
3. (3 points) Hydrazine (N2H4) can react with oxyger in the following chemical reaction: NaH.(1 +0:0) - N2(g) + 2H20 (1...
3. (3 points) Hydrazine (N2H4) can react with oxyger in the following chemical reaction: NaH.(1 +0:0) - N2(g) + 2H20 (1) Calculate AH, for the reaction above, given the following data: 2NH3(g) + 3N20(g) - 4260) + 3H2000 AH,º=-1010. kJ/mol N20(g) + 3H2(g) → N2H (1) + H2O(1 AH-=-317 k!/inol 2NH3(g) + 40:09) - NzH4O + H20(1 AH,"=-143 kJ/mol H2(g) +4202(9) - H20(1) AH"=-286 kJ/mol
Page 2 of 7 Chem 1 Exercise # 3 Calculate the ΔΗ0n for the combustion of...
Page 2 of 7 Chem 1 Exercise # 3 Calculate the ΔΗ0n for the combustion of C6H6(1) at 25°C given the ΔΗ f values below Substance AHf (kJ/mol) CH(1) CO2(g) +49.0 -393.5 -285.8 | Given the following reactions: BCl3(g) 3 H2O0) H3BO3(s) 3 HCI(g) H-112.5 kJ 52H6(g) + 6 H20) 2 HsBOs(s) 6 H2(g) H -493.4 kJ H -185.0 kJ H2(g) Cl2(g)4 Hl(g) Calculate the value of AH for the reaction BaHe(g) 6 Clalg)2 2 BCls(g) + 6 HCI(g) An...
(2) (24 pts) A fuel cell produces electricity via a combustion reaction. A DMFC is a...
(2) (24 pts) A fuel cell produces electricity via a combustion reaction. A DMFC is a proton-exchange fuel cell that uses methanol CH3OH) as the fuel, which reacts with molecular oxygen to produce carbon dioxide and water. (a) (4 pts) Write the balanced combustion reaction for this methanol fuel cell. (b) (4 pts) Write the balanced half-reactions occurring at the cathode and anode of this fuel cell (assume standard acidic conditions) (e) (4 pts) Evaluate AGº (kJ) and AE° (V)...
7) Find AH° for the reaction C3Hg(8) + 5 O2(8) - 3 CO2(8) + 4 H2O(l)....
7) Find AH° for the reaction C3Hg(8) + 5 O2(8) - 3 CO2(8) + 4 H2O(l). AH° = -2046 kJ for the reaction: C3H8(8) + 5 O2(8) - 3 CO2(g) + 4H2O(8) The heat of vaporization of water is 44.0 kJ/mol. The standard enthalpy of formation of water and water vapor are -285.9kj/mol and -241.8 kj/mol, respectively. Note that H20 is a liquid in the first reaction and a gas in the second. 0-1870 kJ 0-2222 kJ O-2002 kJ 0-2090...
Question 5 For a chemical reaction, AH° 238 = +135.7 kJ and A Sº= +0.379 kJ/K....
Question 5 For a chemical reaction, AH° 238 = +135.7 kJ and A Sº= +0.379 kJ/K. Calculate A Gº 800 A-167.5 kJ B.-132.8 kJ C. +133.9k D-212.8 kJ E.-192.3 kJ ОА OB ОС OD ОЕ Question 6 0.5 pt For a chemical reaction, Hº 238 = +135.7 kJ and A Sº = +0.379 kJ/K. At what temperature will A Gº=0? A. 213K B. 402K C.358 K D. 470K E. 251K ОА OB Ос OD ОЕ Question 7 0.5 For a...
Question 23 10 pts The entropy change for the reaction ( ASºrxn) shown below is -121.8...
Question 23 10 pts The entropy change for the reaction ( ASºrxn) shown below is -121.8 J/K. Calculate AS°surr, AS°univ and AGºrxn at 298 K. N2(g) + 2O2(g) + 2NO2(g) AH°rxn = 66.4 kJ • (a) AS surr = [Select ] • (b) AS°univ = [Select ] • (c) AGºrxn = [Select ]
Using provided data, determine AG* (in kJ) for the following reaction. 2036) ++3026) AH,(kJ/mol) S /mol)...
Using provided data, determine AG* (in kJ) for the following reaction. 2036) ++3026) AH,(kJ/mol) S /mol) Ozle) 205.0 Ole) 143 238.82 Question 11 2 pts Use the provided information to determine the equilibrium constant at 298 K for the reaction given 2NO26) N204(8) 4 AH® (kJ/mol) 5° (J/molk) NO2(g) 33.2 239.9 N2048) 9.16 304.3 Equilibrium Constant - (Select) x 10 (Select)
7. Consider the following reaction: H,(8)+CO,(8)=1,0(g)+CO(g) The value of the equilibrium constant K, for the reaction is 0.534 at 700°C. What is the value of K, for this reaction at 298 K? (5 points) (AH; (H20) = -241.8, AH;(CO) = -110.5, AH;(CO2) = -393.5 kJ/mol)
Question 29 (9 points) Consider the following reaction: 3C(s) + 4H2(g) → C3H8(8); AH° =-104.7 kJ; ASP = -287.4J/K at 298 K 1). What is AGⓇ for this reaction? 2). What is the equilibrium constant at 400.0 K for this reaction?
7 Consider the following reaction at 298 K: NH3(g) +HCI(g)NH4CI(s) Using the thermochemical data at 298 K given below (a) Determine the AH for the reaction. (2 marks) (b) Determine the AG for the reaction and comment on its value. (3 marks) (c) Determine the maximum work done available in the reaction. (3 marks) An equilibrium mixture, consisting of 0.5 atm of NHy(), 0.5 atm of HCKg) and excessive of NH Cl(s), is enclosed in a container at 298 K...
3. (3 points) Hydrazine (N2H4) can react with oxyger in the following chemical reaction: NaH.(1 +0:0) - N2(g) + 2H20 (1) Calculate AH, for the reaction above, given the following data: 2NH3(g) + 3N20(g) - 4260) + 3H2000 AH,º=-1010. kJ/mol N20(g) + 3H2(g) → N2H (1) + H2O(1 AH-=-317 k!/inol 2NH3(g) + 40:09) - NzH4O + H20(1 AH,"=-143 kJ/mol H2(g) +4202(9) - H20(1) AH"=-286 kJ/mol
Page 2 of 7 Chem 1 Exercise # 3 Calculate the ΔΗ0n for the combustion of C6H6(1) at 25°C given the ΔΗ f values below Substance AHf (kJ/mol) CH(1) CO2(g) +49.0 -393.5 -285.8 | Given the following reactions: BCl3(g) 3 H2O0) H3BO3(s) 3 HCI(g) H-112.5 kJ 52H6(g) + 6 H20) 2 HsBOs(s) 6 H2(g) H -493.4 kJ H -185.0 kJ H2(g) Cl2(g)4 Hl(g) Calculate the value of AH for the reaction BaHe(g) 6 Clalg)2 2 BCls(g) + 6 HCI(g) An...
(2) (24 pts) A fuel cell produces electricity via a combustion reaction. A DMFC is a proton-exchange fuel cell that uses methanol CH3OH) as the fuel, which reacts with molecular oxygen to produce carbon dioxide and water. (a) (4 pts) Write the balanced combustion reaction for this methanol fuel cell. (b) (4 pts) Write the balanced half-reactions occurring at the cathode and anode of this fuel cell (assume standard acidic conditions) (e) (4 pts) Evaluate AGº (kJ) and AE° (V)...
7) Find AH° for the reaction C3Hg(8) + 5 O2(8) - 3 CO2(8) + 4 H2O(l). AH° = -2046 kJ for the reaction: C3H8(8) + 5 O2(8) - 3 CO2(g) + 4H2O(8) The heat of vaporization of water is 44.0 kJ/mol. The standard enthalpy of formation of water and water vapor are -285.9kj/mol and -241.8 kj/mol, respectively. Note that H20 is a liquid in the first reaction and a gas in the second. 0-1870 kJ 0-2222 kJ O-2002 kJ 0-2090...
Question 5 For a chemical reaction, AH° 238 = +135.7 kJ and A Sº= +0.379 kJ/K. Calculate A Gº 800 A-167.5 kJ B.-132.8 kJ C. +133.9k D-212.8 kJ E.-192.3 kJ ОА OB ОС OD ОЕ Question 6 0.5 pt For a chemical reaction, Hº 238 = +135.7 kJ and A Sº = +0.379 kJ/K. At what temperature will A Gº=0? A. 213K B. 402K C.358 K D. 470K E. 251K ОА OB Ос OD ОЕ Question 7 0.5 For a...
Question 23 10 pts The entropy change for the reaction ( ASºrxn) shown below is -121.8 J/K. Calculate AS°surr, AS°univ and AGºrxn at 298 K. N2(g) + 2O2(g) + 2NO2(g) AH°rxn = 66.4 kJ • (a) AS surr = [Select ] • (b) AS°univ = [Select ] • (c) AGºrxn = [Select ]
Using provided data, determine AG* (in kJ) for the following reaction. 2036) ++3026) AH,(kJ/mol) S /mol) Ozle) 205.0 Ole) 143 238.82 Question 11 2 pts Use the provided information to determine the equilibrium constant at 298 K for the reaction given 2NO26) N204(8) 4 AH® (kJ/mol) 5° (J/molk) NO2(g) 33.2 239.9 N2048) 9.16 304.3 Equilibrium Constant - (Select) x 10 (Select)
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