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Question 4 2 pts All of the following have enthalpy of formation values of zero except...
Question 13 4 pts Which of the following does not have a standard enthalpy of formation equal to zero at 25 °C and 1.0 atm? 0 Ti (s) O S8 (s) O H2 (g) o They all have standard enthalpy of zero O HCl (g)
Question 14 (1 point) Which of the following has a standard enthalpy of formation of zero? OP(s, red) Br2(g) O3(g) 12(8) Arce)
Which of the following will NOT have a standard enthalpy of formation (ΔHfo) equal to zero? Select one: a. He(s) b. Ar(g) c. He(g) d. Al(s) e. N2(g)
3. (14 pts.) The standard molar enthalpy of formation of Fe,Oxs is AH = -8242 kJ/mol, and the standard molar enthalpy of formation of SO2(g) is AH = -296.8 kJ/mol (both at 298 K). Use this information, along with the standard molar enthalpy change of the following reaction at 298K, 2 FeS21s) + 11/2O2(g) → Fe2O3 + 4 SO2(g) AH = -1655 kJ/mol To determine the standard molar enthalpy change of the reaction shown below are 298 K: Fe(s) +...
6. Using the enthalpy of formation values in Appendix 4 of this lab manual, calculate AH' for the following reaction. 2 Na(g) + 2 HyOz - 2 NaOH(aq) + H2 7. The following reaction has a AH of -1196 kJ. Use this value and the information in Appendix 4 to calculate the AH of CIF3(Q). 2 CIF3() + 2NH3() - N2 + 6 HF() + Cl2 AH'= -1196 kJ
46) All of the following have free energy of formation values of zero except a) Li (s) b) He (8) c) N (6) d) F2 (g) HF (B) If a process is both endothermic and spontaneous, then a) AU is less than 0 b) AH is less than 0 c) AG is greater than 0 d) AS is greater than 0 e) AH is equal to 0 48) The combination that always gives a spontaneous process is_ a) b) c)...
Question 6 1 pts Which of the following reactions is a standard formation reaction (i.e. АHræn = AH) at T = 298 K? O 2 Fe (s) + 1.5 O2() → Fe2O3(s) O N2(1) + 2 O2(1) ► N204(1) O CO(g) + 2H2(g) + CH3OH(1) O C(s, graphite) + H2(g) + O2(g) → C6H1206(s) O Cl2(g) + H2(g) →2 HCl(g) Question 4 1 pts A sample of 1.71 moles of a substance was burned in a constant pressure calorimeter. The...
Question 4 2 pts All of the following are characteristics of negativity, EXCEPT: the child separates from mom. the child may not take risks. the child feels powerful. "no" is the magic word. - Previous Next >
4. Use the following formation rxn to answer the questions. 1/2 C12(g) + 3/2 F2(g) → CIF3(g) CIF3 can be prepared by the reaction represented by the equation above. For CIF; the standard enthalpy of formation, AH°, is -163.2 kilojoules/mole and the standard free energy of formation, AG°, is - 123.0 kilojoules/mole. a) Calculate the value of the equilibrium constant for the reaction at 298 K. b) Calculate the standard entropy change, AS°, for the above reaction at 298 K...
q 2 and 4 please! Question 2 Which of the following compounds will hydrogen bond with water (H20)? Select all that apply. Cl2 CC14 CH20 NH3 SCI2 Question 3 Which of the following will have the lowest boiling point? Ne OKr O Ar o Не Question 4 Which of the following statements is FALSE? O A compound with stronger intermolecular forces will have a higher boiling point When a substance melts, some - but not all- of the intermolecular forces...