Using the standard enthalpies of formation, what is the standard enthalpy of reaction? Number ΔΗ k.J rxn
18. Given that AHorxn = -546.6 kJ H2 (g)+F2 (g)2HF (g) AH°rxn = -571.6 kJ 2H2 (g)+ O2 (g) 2H20 (1) Calculate the value of AHrxn for 2F2 (g) 4HF (g) + O2 (g) +2H20 (I)
6. Calculate the energy in the form of heat (in k.J) required to convert 100.0 grams of liquid water at 80.0°C to steam at 122 °C. Assume that no energy in the form of heat is transferred to the environment. (Heat of fusion 333 J/g; heat of vaporization 2256 J/g; specific heat capacities: liquid water 4.184 J/g K, steam 1.92 J/g K) (a) 238 kJ (b) 226 kJ (c) 4.22 kJ (d) 8.37 kJ (e) 17.6 kJ 7. The thermochemical...
1. Use the data given to calculate the value of ΔG°rxn for the reaction at 25 °C. 2 C(graphite) + H2(g) <---> C2H2(g) C(graphite) H2(g) C2H2(g) S° (J/mol ⋅ K) 5.74 130.68 201.0 (kJ/mol) 0 0 −226.8 Report answer to four significant figures.
Calculate ΔG° at 298.0 K for this reaction given that ΔH°rxn = –12.0 kJ and ΔS°rxn = –147 J/K
. (14 pts) Using the reactions in the data section, calculate AHrxn for the reaction 8 Ni(s) S&(s) +12 O2(g)8 NiSOs(s) Data: NiSos() >NiO(s)+ SO2(g) 1/4 S8(s) + 202(g) >2 SO2(g) Ni(s) + ½ O2(g) > NiO(s) AHm" = 156 kJ/mole ,no=-594 kJ/mole AHn 241 kJ/mole rxn
For each of the following reactions, calculate ΔH∘rxn, ΔS∘rxn, and ΔG∘rxn at 25 ∘C. State whether or not the reaction is spontaneous. If the reaction is not spontaneous, would a change in temperature make it spontaneous? If so, should the temperature be raised or lowered from 25 ∘C? N2(g)+O2(g)→2NO(g) Express your answer using three significant figures. ΔH∘rxn ΔHrxn∘ = 183 kJ SubmitPrevious Answers Correct Part H Part complete Calculate ΔS∘rxn at 25 ∘C. Express your answer to one decimal place....
Enter your answer in the provided box. Calculate AHrxn for 2NOCI(g) → N2(g) + O2(g) + Cl2(g) given the following set of reactions: 1/2 N2(g) + 1/2 02(g) → NO(g) NO(g) + 1/2 C12(g) → NOCI(g) AHrxn = 90.3 kJ AH x = -38.6 kJ kJ
Question 4 1 pts Use the given average bond energies to calculate AHrxn for the following chemical reaction. Н н 20 c= o 3 0 O + зн—о—Н C Н Н Bond Bond energy (kJ/mol) C-O 360 C O 707 O O 498 464 Н-о C-H 414 +242 kJ O +914 kJ -914 kJ -242 kJ -2106 kJ
Question 17 3 pts Using standard molar enthalpies of formation given in the table below, calculate AH/xnto one decimal place, for the combustion of ammonia: AHrxn° = E nAH (products) - E mAHt"reactants) 4 NH3(g) + 7 O2(g) → 4NO2(g) + 6H2O(1) molecule AHF (kJ/mol-rxn) NH3(g) -45.9 NO2(g) +33.1 H2O(1) -285.8 H2O(9) -241.8 - 1663.6 kJ/mol-rxn +30.24 kJ/mol-rxn -1398.8 kJ/mol-rxn -298.6 kJ/mol-rxn -206.9 kJ/mol-rxn Question 11 3 pts A gas absorbs 45 kJ of heat and does 29 kJ of...