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The first step in the preparation of lead from its ore (galena, PbS) consists of roasting the ore.
2PbS(s) + 3O2(g) ? 2SO2(g) + 2PbO(s)
Calculate the standard enthalpy change for this reaction using enthalpies of formation.
?H°f (PbS(s)) = -98.32 kJ
?H°f (SO2(g)) = -296.8 kJ
?H°f (PbO(s)) = -219.4 kJ
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Isopentyl acetate, a molecule composed of C, H, and O, smells like bananas. Combustion analysis of 1.750 grams of this molecule yields 1.695 g H2O and 4.142 g CO2. What is the simplest formula for isopentyl acetate
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