In the recovery of iron from iron ore, the reduction of the ore is actually accomplished by reactions involving carbon monoxide. Use the following thermochemical equations, Fe,O3(s) + 3CO(g)→ 2Fe(s) + 3CO,(g) AH° = -28 kJ 3Fe,O3() + CO(g) 2Fe3O4() + Co,(g) AH = -59 kJ FezO,(s) + CO(g)→ 3FCO(s) + CO,(g) AH° = +38 kJ The AH° for the reaction FeO() + CO(g) Fe(s) + CO2(g) is -16.8 kJ. Use this data and the data in the following table to calculate the value of AH° for FeO. Standard Enthalpies of Formation of Typical Substances AH; (KI mol-1) AH; (kl mol-1) 90.37 Substance Substance AH (KI mol-1) Substance AH; (KI mol-1) Substance Ag(s) AgBr() H,O,(/) -187.6 CH.(g) -84.667 NO(g) - 100.4 - 127.0 HBr(g) -36 CH,OH(/) -277.63 NO,(g) 33.8 AgCI(s) HCIg) -92.30 Ca) 81.57 Al() HI(g) 26.6 CaBr,() -682.8 9.67 Al,0,) -1669.8 HNO,() -173.2 CaCO() - 1207 11 CG) (graphite) H,SO,() -811.32 CaCl,() -795.0 Na(s) CO(g) HC,H,0,) NaHCO,) Na,CO,() -110.5 -487.0 CaO() -635.5 -947.7 CO.(g) -393.5 Hg(/) Ca(OH),() -986.59 -1131 CH,(g) -74.848 Hg(g) 60.84 CaSO,() - 1432.7 NaCI) -411.0 CH,CIg) -82.0 1,6) 0. - 1575.2 -426.8 CasO, H,0() CaSO, 2H,04) NAOH() CHI(g) 14.2 K(s) - 2021. Na,SO,6) -1384.5 CH,OH() -238.6 KCI) -435.89 Chg) CO(NH),() (urea) -333.19 KSO,) -1433.7 Fe() Pb(s) CO(NH),(ag) -391.2 N2(g) Fe,O,6) -822.2 PbO() -219.2 CH.(g) 226.75 NH,(g) -46.19 H2(g) H;O(g) CH.(g) 52.284 NH,CI) -315.4 -241.8 So-(g) -296.9 H,O() -285.9 So,(g) -395.2 Express the answer in units of kilojoules per mole. AH° = i kJ/mol

Copper has been used for thousands of years, either as a pure metal or in alloys. It is frequently used today in the production of wires and cables. Copper can be obtained through smelting or recycling. Determine the energy associated with each of these processes in order to recycle 1.40 mol Cu. The smelting of copper occurs by the balanced chemical equation: CuO(s) +CO(g) → Cu(s) +CO,(g) where AHtCuo is = - 155 kJ/mol. Assume the process of recycling copper is simplified to just the melting of the solid Cu starting at 25°C. The melting point of Cu is 1084.5°C with AH®fus = 13.0 kJ/mol and a molar heat capacity, CPCU = 24.5 J/mol:°C.

From the change in internal energy, AE, given for 40 °C, calculate the change in enthalpy, AH, at the same temperature for the reaction: N202 (g) → N2 (g) + O2 (g) AE = -151.3 kJ O -153.2 kJ -153.8 kJ O -155.2 kJ O -148.7 kJ O -151.3 kJ A Moving to another question will save this response. MacBook Air 吕口 F3 F4 F5 F6 # $4 3. 4 6.

Iron can be extracted from the iron(III) oxide found in iron ores (such as haematite) via an oxidation-reduction reaction with carbon. The thermochemical equation for this process is: 2 Fe203(s) + 3 C(s) → 4 Fe(1) + 3 CO2(g) AH° = +467.9 kJ