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Extra Credit Worksheet: Chapter 6-7 1. Ammonia (NH) burns in the presence of...
Worksheet: Chapter 6-7 1. Ammonia (NH,) burns in the presence of a copper catalyst to form...
Worksheet: Chapter 6-7 1. Ammonia (NH,) burns in the presence of a copper catalyst to form nitrogen gas. -1267 k 4NH3 (g)+302(g) 2N2(g)+6H2OG AH=-1 How much heat would evolve when burn 35.80 g of ammonia burns? (1 point) (1 point) Calculate the heat of reaction for 2. PbCl2(s) + Cl2(g)> PbCl4(1) Using the following set of reactions: Pb(s) + Cl2(g) PbCl2(s); AH -359.4 kJ Pb(s)+2C12(g)-PbCl4(1); AH= -329.3 kJ (1) (2) 3. Calculate the standard enthalpy change, AHo, for the following...
help asap 3. Calculate the standard enthalpy change, Hº, for the following reaction using standard enthalpies of for...
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3. Calculate the standard enthalpy change, Hº, for the following reaction using standard enthalpies of formation. (1 point) 2C2H2(g) + 502(g) → 4CO2(g) + 2H20(1) Standard Enthalpies of Formation AH for C2H2(g) = +226.7 kJ/mol AHfor CO2(g) = -393.5 kJ/mol AH for H2O(l) = -285.8 kJ/mol
e. -413.5 kJ = [71-52.7) + 3(-7-6 -25(15.) + -00- - 583.7 .180.7 17. The standard...
e. -413.5 kJ = [71-52.7) + 3(-7-6 -25(15.) + -00- - 583.7 .180.7 17. The standard enthalpy of combustion for naphthalene, C H , (s), is -5156.8 kJ mol-1. Using this data and the standard enthalpies of formation, AH : H2O(l) = -285.9 kJ mol-1; CO2 (g) = -393.5 kJ mol-1, calculate the standard enthalpy of formation of Co H, (s), in kJ mol-1. a. +78.2 kJ b. +935.9 kJ c. -1065.4 kJ d. +3619.7 kJ e. -10235.4 kJ
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)...
Chapter 1 Thermodynamics Page 16 16. The standard enthalpy of combustion of solid phenol (CH3OH) is...
Chapter 1 Thermodynamics Page 16 16. The standard enthalpy of combustion of solid phenol (CH3OH) is -3054 kJ moli' at 298K and its standard molar entropy is 144,0 J K'moll. Calculate the standard Gibbs free energy of formation at 298K. (81,98 kJ mol) 17. Calculate the standard Helmholtz energy of formation of CH2OH(l) at 298K from the standard Gibbs energy of formation, on the assumption that He and O2 are perfect gases. (-160 kJ mol') 18. a. Calculate the heat...
only worth 1 point. 1. (6) 15.0 g of ice cubes at 0.0°C are combined with...
only worth 1 point. 1. (6) 15.0 g of ice cubes at 0.0°C are combined with 150.g of liquid water at 70.0°C in a coffee cup calorimeter. Calculate the final temperature reached, assuming no heat loss or gain from the calorimeter. (Data: specific heat capacity of H2O(l). C4.18 1/8 'C) H2O(s) → H2O(1) AH = 6.02 kJ/mol) 2. (6) Calculate A s for the reaction: 5C(s) + 6H2(g) → CsHuz10 Use the following reactions and given AH's. CsHua(l) + 802()...
need help with 1. A weather balloon with a volume of 200.0 L is filled with...
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1. A weather balloon with a volume of 200.0 L is filled with air and launched at 20°C at sea level, where the atmospheric pressure is 1.00 atm. What is the volume of the balloon where the atmospheric pressure is 63 mmHg and the temperature is 220K? (5 pts) Hint: you need to find the number of moles of air first. 2. Use the following enthalpies of formation to calculate an approximate enthalpy of reaction, AHrxn for:...
Classwork: Ch. 6 Thermodynamics 1. A sample of nitrogen expands in volume from 1.6 L to...
Classwork: Ch. 6 Thermodynamics 1. A sample of nitrogen expands in volume from 1.6 L to 5.4 L at constant temperature. What is the work in joules if the gas expands (a) against a vacuum and (b) against a constant pressure of 3.7 atm? 2. How much heat is evolved (given off) when 266 g of white phosphorus (P) burn in air? P, (s) + 50,0) - P.O.(s) AH--3013 kJ/mol 3. Benzene (CH) burns in oxygen to produce carbon dioxide...
10. Nitric acid, required in the production of nitrate fertilizers, is produced from ammonia by the...
10. Nitric acid, required in the production of nitrate fertilizers, is produced from ammonia by the Ostwald process. Use standard enthalpies of formation to calculate the enthalpy changes in the following system. Use the chemistry data tables posted on the google classroom to obtain the standard enthalpy of formation values. Show your work! (4 marks K/U) a. 4 NH3(g) + 5 O2(8) ► 4 NO(g) + 6 H2O(€) TULUI IU Several Compounds Compound AH, (kJ/mol) -704.2 AICI,(s) AI,O3(s) Caso (s)...
1. The standard enthalpy change for the combustion of mole of propane is -2043.0 kJ. CH_(g)...
1. The standard enthalpy change for the combustion of mole of propane is -2043.0 kJ. CH_(g) +5 0 (g) →3002(g) + 4H2O(g) Calculate Hº for propane based on the following standard molar enthalpies of formation. molecule CO (9) H2O(g) AH (kJ/mol-rxn) -393.5 -241.8 a. +1407.7 kJ/mol-rxn b. +104.7 kJ/mol-rxn c.-104.7 kJ/mol-rxn d -4190.7 kJ/mol-rxn e. -1407.7 kJ/mol-rxn 2. Which of the following statements is/are CORRECT? 1. If a reaction occurs at constant pressure, 4-AH. 2. The change in energy for...
Worksheet: Chapter 6-7 1. Ammonia (NH,) burns in the presence of a copper catalyst to form nitrogen gas. -1267 k 4NH3 (g)+302(g) 2N2(g)+6H2OG AH=-1 How much heat would evolve when burn 35.80 g of ammonia burns? (1 point) (1 point) Calculate the heat of reaction for 2. PbCl2(s) + Cl2(g)> PbCl4(1) Using the following set of reactions: Pb(s) + Cl2(g) PbCl2(s); AH -359.4 kJ Pb(s)+2C12(g)-PbCl4(1); AH= -329.3 kJ (1) (2) 3. Calculate the standard enthalpy change, AHo, for the following...
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3. Calculate the standard enthalpy change, Hº, for the following reaction using standard enthalpies of formation. (1 point) 2C2H2(g) + 502(g) → 4CO2(g) + 2H20(1) Standard Enthalpies of Formation AH for C2H2(g) = +226.7 kJ/mol AHfor CO2(g) = -393.5 kJ/mol AH for H2O(l) = -285.8 kJ/mol
e. -413.5 kJ = [71-52.7) + 3(-7-6 -25(15.) + -00- - 583.7 .180.7 17. The standard enthalpy of combustion for naphthalene, C H , (s), is -5156.8 kJ mol-1. Using this data and the standard enthalpies of formation, AH : H2O(l) = -285.9 kJ mol-1; CO2 (g) = -393.5 kJ mol-1, calculate the standard enthalpy of formation of Co H, (s), in kJ mol-1. a. +78.2 kJ b. +935.9 kJ c. -1065.4 kJ d. +3619.7 kJ e. -10235.4 kJ
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)...
Chapter 1 Thermodynamics Page 16 16. The standard enthalpy of combustion of solid phenol (CH3OH) is -3054 kJ moli' at 298K and its standard molar entropy is 144,0 J K'moll. Calculate the standard Gibbs free energy of formation at 298K. (81,98 kJ mol) 17. Calculate the standard Helmholtz energy of formation of CH2OH(l) at 298K from the standard Gibbs energy of formation, on the assumption that He and O2 are perfect gases. (-160 kJ mol') 18. a. Calculate the heat...
only worth 1 point. 1. (6) 15.0 g of ice cubes at 0.0°C are combined with 150.g of liquid water at 70.0°C in a coffee cup calorimeter. Calculate the final temperature reached, assuming no heat loss or gain from the calorimeter. (Data: specific heat capacity of H2O(l). C4.18 1/8 'C) H2O(s) → H2O(1) AH = 6.02 kJ/mol) 2. (6) Calculate A s for the reaction: 5C(s) + 6H2(g) → CsHuz10 Use the following reactions and given AH's. CsHua(l) + 802()...
need help with
1. A weather balloon with a volume of 200.0 L is filled with air and launched at 20°C at sea level, where the atmospheric pressure is 1.00 atm. What is the volume of the balloon where the atmospheric pressure is 63 mmHg and the temperature is 220K? (5 pts) Hint: you need to find the number of moles of air first. 2. Use the following enthalpies of formation to calculate an approximate enthalpy of reaction, AHrxn for:...
Classwork: Ch. 6 Thermodynamics 1. A sample of nitrogen expands in volume from 1.6 L to 5.4 L at constant temperature. What is the work in joules if the gas expands (a) against a vacuum and (b) against a constant pressure of 3.7 atm? 2. How much heat is evolved (given off) when 266 g of white phosphorus (P) burn in air? P, (s) + 50,0) - P.O.(s) AH--3013 kJ/mol 3. Benzene (CH) burns in oxygen to produce carbon dioxide...
10. Nitric acid, required in the production of nitrate fertilizers, is produced from ammonia by the Ostwald process. Use standard enthalpies of formation to calculate the enthalpy changes in the following system. Use the chemistry data tables posted on the google classroom to obtain the standard enthalpy of formation values. Show your work! (4 marks K/U) a. 4 NH3(g) + 5 O2(8) ► 4 NO(g) + 6 H2O(€) TULUI IU Several Compounds Compound AH, (kJ/mol) -704.2 AICI,(s) AI,O3(s) Caso (s)...
1. The standard enthalpy change for the combustion of mole of propane is -2043.0 kJ. CH_(g) +5 0 (g) →3002(g) + 4H2O(g) Calculate Hº for propane based on the following standard molar enthalpies of formation. molecule CO (9) H2O(g) AH (kJ/mol-rxn) -393.5 -241.8 a. +1407.7 kJ/mol-rxn b. +104.7 kJ/mol-rxn c.-104.7 kJ/mol-rxn d -4190.7 kJ/mol-rxn e. -1407.7 kJ/mol-rxn 2. Which of the following statements is/are CORRECT? 1. If a reaction occurs at constant pressure, 4-AH. 2. The change in energy for...
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