Why do we divide
enthalpies in the first problem but multiply enthalpies in the
second problem. What is different about these two problems that we
have to use a different tactic to find the enthalpy of the third
equation.Homework Answers
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Why do we divide
enthalpies in the first problem but multiply enthalpies in the
second problem....
2. The enthalpies of the following reactions can be measured. CH, (g) + 302 (8) 200,...
2. The enthalpies of the following reactions can be measured. CH, (g) + 302 (8) 200, (g) + 2H,0 (1) AH = -1411.1 kJ CH,OH (1) + 302 (9) 2002 (9) + 3H20 (1) AH° = -1367.5 kJ Use these values and Hess's law to determine the enthalpy change for the reaction CH, (g) + H20 (1) - CHOH (1)
1. The enthalpies of the following reactions can be measured. CH, (g) + 20, (g) CO2(g)...
1. The enthalpies of the following reactions can be measured. CH, (g) + 20, (g) CO2(g) + 2H,0 (g) AH = -802.4 kJ CH,OH (g) +/, 0, (g) CO2(g) + 2H,0 (g) AH = -676 kJ Use these values and Hess's law to determine the enthalpy change for the reaction CH, (g) +'/20 (8) CH,OH(g)
Consider the reaction: 2 BsHs (I)12 02 (g) (a) Use the standard enthalpies of formation found...
Consider the reaction: 2 BsHs (I)12 02 (g) (a) Use the standard enthalpies of formation found in Appendix B of the textbook to calculate the enthalpy change of the reaction. The standard enthalpy of formation of BsH, (I) is 73.2 kl/mol. 5 B2Os (s) +9 H2O (I) (b) Predict the sign of the entropy change and provide the two reasons likely to have made the biggest impact on the entropy change (and upon which you based your prediction). (c) Based...
Review Constants Periodic Tab Enthalpy (H) is a state function, which means the enthalpy of a...
Review Constants Periodic Tab Enthalpy (H) is a state function, which means the enthalpy of a given chemical reaction is independent of the path taken from the initial to final states for that chemical reaction. Enthalpy Change (AI) is a measure of the energy change of a system that does virtually no Calculating Reaction Enthalpies Using Hess's Law Follow the steps below and use the information provided on the left to find the A Hm for the following process: Overall...
EXPLAIN IN DETAIL , PLEASE( LIKE WHERE DO U GET THAT FROM? OR WHY DO WE...
EXPLAIN IN DETAIL , PLEASE(
LIKE WHERE DO U GET THAT FROM? OR WHY DO WE HAVE TO DO THAT?)
15. Given the enthalpy changes for the following reactions... Equation 1 6MnO(s) + O2(g) → 2 MnO4(s) Equation 2 2Mn2O3(s) + O2(g) → 4MnO2(s) AH° = -464kJ AH° = -142 kJ AH° = -136 kJ Equations 3 Mno(s) + 1/2O2(g) → MnO2(s) It is possible to determine the enthalpy change for the reaction below: "Final Equation" 4Mn304(s) + O2(g) →...
Constants Periodic Table Consider the reaction: H2(g) +12(s) + 2HI(g) Average Bond Enthalpies (kJ/mol) Part A...
Constants Periodic Table Consider the reaction: H2(g) +12(s) + 2HI(g) Average Bond Enthalpies (kJ/mol) Part A Use the bond enthalpies in the table to estimate AH for this reaction, ignoring the fact that iodine is in the solid state. Express your answer in kilojoules to two significant figures. IVO AQ R o 21 ? C-H 413 N-H 391 0-H 463 F-F 155 C-C 348 N-N 163 0-0 146 C=C 614 N-O 201 0=0 495 Cl-F 253 C-N 293 N-F 272...
EXPERIMENT #9 DETERMINING THE ENTHALPY OF A CHEMICAL REACTION Used 50ml of NaOH. Reactions are pr...
EXPERIMENT #9 DETERMINING THE ENTHALPY OF A CHEMICAL
REACTION
Used 50ml of NaOH. Reactions are provided in second
picture.
Computer 13 14. Conduct this reaction in a fume hood or in a well-ventilated area. Repeat Step 10 to conduct the reaction and collect temperature data. DATA TABLE Reaction 2 Reaction 3 Reaction 1 Maximum temperature ('c) 35.5 C 322.47 35,6C Initial temperature ("C) Temperature change (AT) |1니 13Yoll'ugoC | 03 DATA ANALYSIS 1. Calculate the amount of heat energy, g,...
Problem 3 please I'm not understanding. Please tell how you got the answer step by step...
Problem 3 please I'm not understanding. Please tell how
you got the answer step by step and the equation used !
Thanks
Date 1. Calculate AE for a system undergoing an endothermic process in which 25.3 kJ of heat flows and where 4.6 kJ of work is done on the system. 2. Calculate the work associated with the compression of a gas from 52 L. to 33 L at a constant external pressure of 16 atm. 3. How many grams...
4. ( point) For the problem above that does produce products: a. What is oxidized in...
4. ( point) For the problem above that does produce products: a. What is oxidized in the reaction? b. What is the oxidizing agent in the reaction? 5. (3 points) Consider the following reaction: 2CH,OH(g) à 2CH,(g) +O(g) AH +252.8 kJ a) Calculate the amount of heat transferred when 24.0 g of CH,OH(g) is decomposed by this reaction at constant pressure. b) For a given sample of CH,OH, the enthalpy change during the reaction is 82.1 kJ. How many grams...
THERM OCHEMISTRY I1: HESS'S LAW OF CONSTANT HEAT SUMMATION ADVANCED PROBLEM ASSIGNMENT Dare Section Name REA...
THERM OCHEMISTRY I1: HESS'S LAW OF CONSTANT HEAT SUMMATION ADVANCED PROBLEM ASSIGNMENT Dare Section Name READ THE EXPERIMENTAL DISCUSSION FIRST SHOW CALCULATION SET-UPI SIGNS! SIGNIFICANT FIGUREESi The 1.00 M solutions of HNO, and NaOH used in this experiment are prepared by diluting 6.00 M stock solutions. 1 What volume of 6.00 M stock solurion and whar volume of water is required to prepare 50.0 mL of 1.0 M solution? mL H.O mL 6.00 M Stock Solution How many moles of...
2. The enthalpies of the following reactions can be measured. CH, (g) + 302 (8) 200, (g) + 2H,0 (1) AH = -1411.1 kJ CH,OH (1) + 302 (9) 2002 (9) + 3H20 (1) AH° = -1367.5 kJ Use these values and Hess's law to determine the enthalpy change for the reaction CH, (g) + H20 (1) - CHOH (1)
1. The enthalpies of the following reactions can be measured. CH, (g) + 20, (g) CO2(g) + 2H,0 (g) AH = -802.4 kJ CH,OH (g) +/, 0, (g) CO2(g) + 2H,0 (g) AH = -676 kJ Use these values and Hess's law to determine the enthalpy change for the reaction CH, (g) +'/20 (8) CH,OH(g)
Consider the reaction: 2 BsHs (I)12 02 (g) (a) Use the standard enthalpies of formation found in Appendix B of the textbook to calculate the enthalpy change of the reaction. The standard enthalpy of formation of BsH, (I) is 73.2 kl/mol. 5 B2Os (s) +9 H2O (I) (b) Predict the sign of the entropy change and provide the two reasons likely to have made the biggest impact on the entropy change (and upon which you based your prediction). (c) Based...
Review Constants Periodic Tab Enthalpy (H) is a state function, which means the enthalpy of a given chemical reaction is independent of the path taken from the initial to final states for that chemical reaction. Enthalpy Change (AI) is a measure of the energy change of a system that does virtually no Calculating Reaction Enthalpies Using Hess's Law Follow the steps below and use the information provided on the left to find the A Hm for the following process: Overall...
EXPLAIN IN DETAIL , PLEASE(
LIKE WHERE DO U GET THAT FROM? OR WHY DO WE HAVE TO DO THAT?)
15. Given the enthalpy changes for the following reactions... Equation 1 6MnO(s) + O2(g) → 2 MnO4(s) Equation 2 2Mn2O3(s) + O2(g) → 4MnO2(s) AH° = -464kJ AH° = -142 kJ AH° = -136 kJ Equations 3 Mno(s) + 1/2O2(g) → MnO2(s) It is possible to determine the enthalpy change for the reaction below: "Final Equation" 4Mn304(s) + O2(g) →...
Constants Periodic Table Consider the reaction: H2(g) +12(s) + 2HI(g) Average Bond Enthalpies (kJ/mol) Part A Use the bond enthalpies in the table to estimate AH for this reaction, ignoring the fact that iodine is in the solid state. Express your answer in kilojoules to two significant figures. IVO AQ R o 21 ? C-H 413 N-H 391 0-H 463 F-F 155 C-C 348 N-N 163 0-0 146 C=C 614 N-O 201 0=0 495 Cl-F 253 C-N 293 N-F 272...
EXPERIMENT #9 DETERMINING THE ENTHALPY OF A CHEMICAL
REACTION
Used 50ml of NaOH. Reactions are provided in second
picture.
Computer 13 14. Conduct this reaction in a fume hood or in a well-ventilated area. Repeat Step 10 to conduct the reaction and collect temperature data. DATA TABLE Reaction 2 Reaction 3 Reaction 1 Maximum temperature ('c) 35.5 C 322.47 35,6C Initial temperature ("C) Temperature change (AT) |1니 13Yoll'ugoC | 03 DATA ANALYSIS 1. Calculate the amount of heat energy, g,...
Problem 3 please I'm not understanding. Please tell how
you got the answer step by step and the equation used !
Thanks
Date 1. Calculate AE for a system undergoing an endothermic process in which 25.3 kJ of heat flows and where 4.6 kJ of work is done on the system. 2. Calculate the work associated with the compression of a gas from 52 L. to 33 L at a constant external pressure of 16 atm. 3. How many grams...
4. ( point) For the problem above that does produce products: a. What is oxidized in the reaction? b. What is the oxidizing agent in the reaction? 5. (3 points) Consider the following reaction: 2CH,OH(g) à 2CH,(g) +O(g) AH +252.8 kJ a) Calculate the amount of heat transferred when 24.0 g of CH,OH(g) is decomposed by this reaction at constant pressure. b) For a given sample of CH,OH, the enthalpy change during the reaction is 82.1 kJ. How many grams...
THERM OCHEMISTRY I1: HESS'S LAW OF CONSTANT HEAT SUMMATION ADVANCED PROBLEM ASSIGNMENT Dare Section Name READ THE EXPERIMENTAL DISCUSSION FIRST SHOW CALCULATION SET-UPI SIGNS! SIGNIFICANT FIGUREESi The 1.00 M solutions of HNO, and NaOH used in this experiment are prepared by diluting 6.00 M stock solutions. 1 What volume of 6.00 M stock solurion and whar volume of water is required to prepare 50.0 mL of 1.0 M solution? mL H.O mL 6.00 M Stock Solution How many moles of...
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