All of the following have the dame Hf except: a) H2 (g) b) C(s) c) H2O (l) d) Fe(s) e) N2(g)

Chem Hw need help with question 66 and question 68

2. Determine the AG for the reaction: 2CO + 2H2 CO29 + CHA at 298K AH =-247.3 LJ/mol AS = -256.5 J/mol -253.7 J 76,200 kJ -182.8 kJ -170.9 1 CLEAR ALL 7 O 4 1 ( PREVIOUS

For the following example, identify the following. H20(1) – H2O(s) OA negative AH and a negative AS OA positive AH and a negative AS O A negative AH and a positive AS O A positive AH and a positive AS It is not possible to determine without more information. a 近

What is the AH for the following reaction: IF5 (8)→ IF 3 (g) + F₂ (g) Given: IF (g) + F2 (g) → IF 3 (g) IF (g) + 2F2 (g) → IFs (g) +1135 kJ -35 kJ +355 kJ -1135 kJ +35 kJ ΔΗ = -390 kJ ΔΗ = -745 kJ

How many moles of Hz are required to produce-3751 kJ of heat in the following reaction? N: (g) + 3 H2 (g)→2 NHs (g) AH° = -91.8 kJ/mol

How much energy in kJ is required to decompose 765 g of PCI3, according to the reaction below? (PCI3:137.32 g/mol) 31 - 4 PC13(g) → P4(s) + 6 Cl2(g) AH°rxn =+1207 kJ O A) 1681 O B) 7016 O C) 5950 O D) 4582 O E) 2310

5) Use the free energies of formation given below to calculate the equilibrium constant (K) for the following reaction at 298 K. (A B) cpsnc nsdo () Svods ori to lls (C avods ot to 2 HNO3(aq) + NO(g) → 3 NO2(g) + H20(1) smul K= ? AG°f (kJ/mol) -110.9 87.6 51.3 -237.1 onon ( A) 1.15 × 10-9 B) 0.980 C) 8.71 × 108 D) 1.02 E) 5.11 × 10-4 oim t gnier ng DA or oisluole (S oini aniwollol orl 00cH SI+ (9)s 8.280 0.02 e.EE (lomLD1 HA

Calculate DELTA G for C(graphite) ----> C(diamond).

6. Use the standard heat of formation AHf to calculate the AH for the reaction: a. C3H8 (g) + 5 O2 (g) C3H8 -104KJ O₂ =0 KI 3 CO2 (g) + 4H₂O (1) CO2 -393.5 KJ H₂O -286 KJ