1. Methanol is a high-octane fuel used in high-performance racing engines. Calculate AG for the reaction 2CH;OH(g) + 30:(g) –→ 2CO;(g) + 4H;O(g)

Is the reaction endothermic or exothermic? Explain. Co(H,O), (aq) + 4CF (aq) 2 CoCl7 (aq) + 6H;O (1) Is the reaction reactant favored or product favored? Explain.

Item 22 22 of 25 I Review I Constants I Periodic Table Classify the following as exothermic or endothermic reactions and give AH for each. Part E Classify reaction as exothermic or endothermic. Formation of aluminum oxide and copper from aluminum and copper (II) oxide: 2Al(s)+3CuO(s)→Al2O3(s)+3Cu(s)+1204kJ exothermic reaction O endothermic reaction Part F Give AH for reaction above. Express your answer as an integer. ? kJ

Question 15.62

(a) Draw a Lewis diagram for carbonic acid, H,CO3, with a central carbon atóm bonded to the three oxygen atoms. (b) Carbonic acid is unstable in aqueous solution and converts to dissolved carbon dioxide. Use bond enthal- pies to estimate the enthalpy change for the following reaction: H,CO;→ H,O + CO,

18. (a) Molecule N₂H4 (1) + 2 H₂O2 (1) → N2(g) + 4 H₂O (1) Complete the following table: Lewis Dot Structure (use dots or lines to show bonds) (b) (c) (d) N₂H4 H₂O2 N₂ H₂O Calculate the AH°rxn using average bond energies (Table 9.4 in textbook) Calculate the AH°rxn using the standard enthalpies of formation (Appendix 2 in textbook) Why are these two values slightly different?

How do I determine and write out products of this reaction? Also is this a decomposition reaction? NaHCO3 (s) →

Calculate AH for the following reaction: IXI C(s) +H,0(g)→Co(g) - H, (3) Use the following reactions and given AH values: C(s) + O2 (g)→CO, (g), AH- 393.5 kJ 20(g) + 02 (g)→2CO2(g), AH = -566.0 kJ 2H2 (g) + O2 (g)→2H2O(g). AH = -483.6 kJ Express your answer using four significant figures.

Calculate the standard enthalpy change for the reaction 4A + 2B → 2AB + A2 Given: 2A+B A2B 2A2B 2AB+ A2 AH° = – 25.0 kJ/mol %3D AH° = 35.0 kJ/mol %3D O 10.0 kJ/mol O-15.0 kJ/mol 45.0 kJ/mol -95.0 kJ/mol O-60.0 kJ/mol

What is the change in enthalpy in kilojoules when 2.30 mol of Mg is completely reacted according to the following reaction 2 Mg(s) + O:(g) 2 MgO(s) AH = -1204 kJ