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L 255-7.cozts) to 2) Ethanol, C2H5OH, is promoted as a clean fuel and is used as...
Ethanol (C2H5OH) is used as an additive in many fuels today. What is AHørxn (kJ) for...
Ethanol (C2H5OH) is used as an additive in many fuels today. What is AHørxn (kJ) for the combustion of 2 moles of liquid ethanol? C2H5OH (1) + 3 O2() + 2 CO2(g) + 3 H20 (1) Formula Hºf (kJ/mol) @ 298K C2H5OH-277.6 CO2(g) -393.5 H2O () -241.8 H20 -285.8 A. -401.7 kJ B. +401.7 kJ C. -2469 kJ D. +2734 kJ E. -2734 kJ О Е ОА oc OB
Reaction Stoichiometry: Determining How Much CO2 You Produce. 1. Ethanol, C2H5OH, is a fuel additive commonly...
Reaction Stoichiometry: Determining How Much CO2 You Produce. 1. Ethanol, C2H5OH, is a fuel additive commonly added to gasoline and when burned, produces CO2 and H20. (i) Write a balanced chemical equation that describes the combustion of ethanol. (ii) How many moles of CO2 are produced from each mole of ethanol completely burned? (ii) How many moles of O2 are required to produce 10.0 moles of CO2? (iii) What mass of CO2 is produced from the combustion of the 4.3...
Answer it plz 4. Determine the theoretical AH°rxn: The theoretical heat of combustion of ethanol (AH®rxn)...
Answer it plz
4. Determine the theoretical AH°rxn: The theoretical heat of combustion of ethanol (AH®rxn) can be calculated using the standard molar heat of formations from the thermochemical equation. CH3CH2OH (C) + 3 O2(g) → 2 CO2 (g) + 3 H2O(g) AHørxn = ? rxn ΔΗ, - ZnAH"prod) Z(MAH react) AHP (H20 (g)) = -241.83 kJ/mol: AH (CO2(g)) = -393.51 kJ/mol; AH(CH3CH2OH (e)) = -277.0 kJ/mol; and recall that AHF of element = 0
Measuring Heat of Reaction Problems 5. A sample of ethanol (C2H5OH), weighing 6.83 g underwent combustion...
Measuring Heat of Reaction Problems 5. A sample of ethanol (C2H5OH), weighing 6.83 g underwent combustion in a bomb calorimeter by the following reaction: 02 (g) 2 CO2 (g)3 H2O () C2H5OH ()3 If the heat capacity of the calorimeter and contents was 18.1 kJ/°C and the temperature of the calorimeter rose from 25.50 to 36.73, (1) what is the AH of the reaction? Using the definitions at the beginning of the module describe (2) the calorimeter + contents, (3)...
can you do the 7 and 9 ? can you also show and explain me step...
can you do the 7 and 9 ? can you also show and explain
me step by step?
D. 49.6 kJ E. 57.3 kJ 7. Butane (C4H10) undergoes combustion in excess oxygen to generate gaseous carbon dioxide and water. Given AH° [C4H10(g)] = -124.7 kJ/mol, AH° [CO2(g)] = -393.5 kJ/mol, AH [H2O(g)] = -241.8 kJ/mol, how much energy is released (kJ) when 8.30 g of butane is burned? Combustion of butane: 2 CH2(g) + 13 O2(g) → 8 CO2(g) +...
(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)...
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...
6-8 Using the table below, calculate the AH rxn for each of the following equations. Selected...
6-8 Using the table below, calculate the AH rxn for each of the following equations. Selected Standard Enthalpies of Formation at 25° C (298K) AH (kJ/mol) (kJ/mol Formula AH 0 Silver 92.3 Agis) AgC(3) 0 1270 218 Formula AH (kJ/mol Formula Calcium Ca(s) CI (9) Ca(s) 635.1 HC (G) Caco (s)-1206.9 Hydrogen Hig) Carbon C(graphite) 0 H (9) C(diamond) 1.9 Nitrogen COL) -1105 N19) CO(g) -393.5 NH,(g CH_(9) 74.9 NO(9) CH,OHI) -238.6 Oxygen HỎNG) 133 O.) CS.) 87.9 O (9)...
1. 2. * Incorrect. What is the heat of formation of elements in their standard states?...
1.
2.
* Incorrect. What is the heat of formation of elements in their standard states? Did you use the correct equation of products minus reactants? The amino acid glycine, C2H5NO2, is one of the compounds used by the body to make proteins. The equation for its combustion is 4C2H5NO2(s) + 902(g) + 8C02(g) +10H20(1) +2N2(0) For each mole of glycine that burns, 973.49 kJ of heat is liberated. Use this information, plus values of AHF for the products of...
Chapter 5 and Chapter 10 Problem solving (please practice the following questions and make sure that you understand...
Chapter 5 and Chapter 10 Problem solving (please practice the following questions and make sure that you understand the principles behind: you can find Ar from textbook or website I. A 145 g sample of copper metal at 100.0°C is placed into 250.0 g of water at 25.0°C in a calorimeter. When the system reaches thermal equilibrium, the temperature of the water in the calorimeter is 28.8°C. Assume the calorimeter is perfectly insulated. What is the specific heat capacity of...
Ethanol (C2H5OH) is used as an additive in many fuels today. What is AHørxn (kJ) for the combustion of 2 moles of liquid ethanol? C2H5OH (1) + 3 O2() + 2 CO2(g) + 3 H20 (1) Formula Hºf (kJ/mol) @ 298K C2H5OH-277.6 CO2(g) -393.5 H2O () -241.8 H20 -285.8 A. -401.7 kJ B. +401.7 kJ C. -2469 kJ D. +2734 kJ E. -2734 kJ О Е ОА oc OB
Reaction Stoichiometry: Determining How Much CO2 You Produce. 1. Ethanol, C2H5OH, is a fuel additive commonly added to gasoline and when burned, produces CO2 and H20. (i) Write a balanced chemical equation that describes the combustion of ethanol. (ii) How many moles of CO2 are produced from each mole of ethanol completely burned? (ii) How many moles of O2 are required to produce 10.0 moles of CO2? (iii) What mass of CO2 is produced from the combustion of the 4.3...
Answer it plz
4. Determine the theoretical AH°rxn: The theoretical heat of combustion of ethanol (AH®rxn) can be calculated using the standard molar heat of formations from the thermochemical equation. CH3CH2OH (C) + 3 O2(g) → 2 CO2 (g) + 3 H2O(g) AHørxn = ? rxn ΔΗ, - ZnAH"prod) Z(MAH react) AHP (H20 (g)) = -241.83 kJ/mol: AH (CO2(g)) = -393.51 kJ/mol; AH(CH3CH2OH (e)) = -277.0 kJ/mol; and recall that AHF of element = 0
Measuring Heat of Reaction Problems 5. A sample of ethanol (C2H5OH), weighing 6.83 g underwent combustion in a bomb calorimeter by the following reaction: 02 (g) 2 CO2 (g)3 H2O () C2H5OH ()3 If the heat capacity of the calorimeter and contents was 18.1 kJ/°C and the temperature of the calorimeter rose from 25.50 to 36.73, (1) what is the AH of the reaction? Using the definitions at the beginning of the module describe (2) the calorimeter + contents, (3)...
can you do the 7 and 9 ? can you also show and explain
me step by step?
D. 49.6 kJ E. 57.3 kJ 7. Butane (C4H10) undergoes combustion in excess oxygen to generate gaseous carbon dioxide and water. Given AH° [C4H10(g)] = -124.7 kJ/mol, AH° [CO2(g)] = -393.5 kJ/mol, AH [H2O(g)] = -241.8 kJ/mol, how much energy is released (kJ) when 8.30 g of butane is burned? Combustion of butane: 2 CH2(g) + 13 O2(g) → 8 CO2(g) +...
(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)...
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...
6-8 Using the table below, calculate the AH rxn for each of the following equations. Selected Standard Enthalpies of Formation at 25° C (298K) AH (kJ/mol) (kJ/mol Formula AH 0 Silver 92.3 Agis) AgC(3) 0 1270 218 Formula AH (kJ/mol Formula Calcium Ca(s) CI (9) Ca(s) 635.1 HC (G) Caco (s)-1206.9 Hydrogen Hig) Carbon C(graphite) 0 H (9) C(diamond) 1.9 Nitrogen COL) -1105 N19) CO(g) -393.5 NH,(g CH_(9) 74.9 NO(9) CH,OHI) -238.6 Oxygen HỎNG) 133 O.) CS.) 87.9 O (9)...
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* Incorrect. What is the heat of formation of elements in their standard states? Did you use the correct equation of products minus reactants? The amino acid glycine, C2H5NO2, is one of the compounds used by the body to make proteins. The equation for its combustion is 4C2H5NO2(s) + 902(g) + 8C02(g) +10H20(1) +2N2(0) For each mole of glycine that burns, 973.49 kJ of heat is liberated. Use this information, plus values of AHF for the products of...
Chapter 5 and Chapter 10 Problem solving (please practice the following questions and make sure that you understand the principles behind: you can find Ar from textbook or website I. A 145 g sample of copper metal at 100.0°C is placed into 250.0 g of water at 25.0°C in a calorimeter. When the system reaches thermal equilibrium, the temperature of the water in the calorimeter is 28.8°C. Assume the calorimeter is perfectly insulated. What is the specific heat capacity of...
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