If a reaction A → C with an enthalpy of reaction AHẠC can also proceed via two steps: A→ B and - C with enthalpies of reaction AHAB and AHBC respectively, then the fact that AHAC = AHAB + AHBC is in agreement with which of the following? %3D O A. The first law of thermodynamics O B. The second law of thermodynamics O C. The third law of thermodynamics O D. The law of conservation of energy O E. Both (A) and (D)

If a reaction A → C with an enthalpy of reaction AHẠC can also proceed via two steps: A→ B and - C with enthalpies of reaction AHAB and AHBC respectively, then the fact that AHAC = AHAB + AHBC is in agreement with which of the following? %3D O A. The first law of thermodynamics O B. The second law of thermodynamics O C. The third law of thermodynamics O D. The law of conservation of energy O E. Both (A) and (D)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

pitiosge ertl a54 pll 81.A bns noituloa ent l HA 1.02grams of Mg was reacted with excess 1 M HCI (ag) (255.0 grams) in a coffee-cup calorimeter. T of the solution rose from 22.0°C to 41.6°C. Calculate the Change in heat of the reaction. C= 3.91 J g °C o vaneb erlt as Imip 00.eaU (p) (p)
nments in Connect Given: G h ✓ Question Completion Status: My Apps Dashboard | University of Tam... Given: 117 kJ -234 kJ 234 kJ -150. KJ O-117 kJ rxn ut.blackboard.com Mail - Matthew D. Leonard - Outlook = ? QUESTION 11 Use the standard reaction enthalpies given below to determine AH°rxn for the following reaction: 4 NO(g) + 2 O2(g) → 4 NO2(g) AH°rxn N2(g) + O2(g) → 2 NO(g) 1/2 N2(g) + O2(g) → NO2(g) AH°rxn = +183 kJ AH° = +33 kJ QUESTION 12 Use the standard reaction enthalpies given below to determine AH°rxn for the following reaction: P4(g) + 10 Cl₂(g) → 4 PC15(s) ΔΗ rxn = ? AH°rxn PC15(s)→ PC13(g) + Cl2(g) P4(g) + 6 Cl2(g) → 4 PC13(9) AH°rxn = +157 kJ AH°rxn ΔΗ = -1207 kJ
Consider the balanced reaction 2 A + 9 B → 6 C + 2 D and the enthalpies of formation provided in the table below. AH; Compound (kJ/mol) A -101.8 В 66 C -46.6 342.1 Calculate the AH value for the overall reaction in kJ per mole of reaction. Report your answer to one decimal place (ignore significant figures).
vor sit to HA SH the following conditions would always result system? in an increase in the internal energy of a 4. The system gains heat and has work done on it by the surroundings 8. Which on the B. The system loses heat and does work surroundings. on nerd لاتين تمرد the Q Th PESA A the fois.o A PEEN HIEF O D. The system loses heat and has work done on it by the dings. surroun C. The system gains heat and does work on the surroundings.
tion 21 of 27 > The balanced combustion reaction for C, H, is 2C H (1) + 150₂(g) → 12 CO₂(g) + 6H₂O(1) + 6542 kJ If 9.000 g C,H, is burned and the heat produced from the burning is added to 5691 g of water at 21 °C, what is the final temperature of the water? I final temperature: V G 6 MacBook Air Y H 8 N M ( 9 DD 19 O 1 0 4 P 니 141 option °C (20) 413 delete
5. (. One mole of an ideal gas expands against an external pressure of 1.0 atm from an initial state given by 10.0 atm and 273 K to a final state given by 1.0 atm and 273 K. Calculate the work (in Joules) for this process.
Complete the following reaction equation by supplying the formula of the missing reactant, product or catalyst. ● Alcohol H₂SO4 CH3-C=CH-CH2-CH3 180 C You do not have to consider stereochemistry. In cases where there is more than one answer, just draw one. 9-85 ***** CH3 // CH4 +[ ] در ? ChemDoodle
A system that does no work but which receives heat from the surroundings has O q = AU O q = -AU O q 0 O w = AU O q> 0, AU < 0
O Macmillan Learning Calculate the standard enthalpy change for the following reaction at 25 °C. C3H₂(g) + 5O₂(g) → 3 CO₂ (g) + 4H₂O(g) 2 AH values can be found in this table of thermodynamic values. AH rxn = kJ/mol
14. Which of the following statements are true about a system that absorbs 300J of heat from the surroundings while performing 150 J of work on the surroundings? I. The internal energy change of the system is +150 J. The process described above is exothermic. The internal energy change of the system is -150 J. The process described above is endothermic. II. III. IV. а. I, II b. II, III с. I, IV d. III, IV
H H H H н-с-с-с-с-н 1. Consider the following chemical reaction for the combustion of butane: H H H H C,H10 + O2 H,O + CO, a) Given the bond energies in the accompanying table, find AH for the formation of 1 mole of water in this reaction. (Note: Assume that the reactants completely dissociate before recombining to form water) SHOW ALL WORK!! b) Is this reaction endothermic or exothermic? How do you know?
Consider these reactions, where M represents a generic metal. 1. 2M(s) + 6HCl(aq) yields to 2MCl3(aq) + 3H2(g) Detal H1=-571.0 kJ 2. HCl(g) yields to HCl(aq) Delta H2=-74.8 kJ 3. H2(g) + Cl2(g) yields to 2HCl(g) Delta H3=-1845.0 kJ 4. MCl3(s) yields to MCl3(aq) Delta H4=-370.0 kJ Use the given information to determine the enthalpy of the reaction 2M(s) + 3Cl2(g) yields to 2MCl3(s) Use the correct number of significant digits.