Question

lynamics Saved You received no credit for this questa Be sure to answer all parts. Comment on the feasibility of extracting copper from its ore chalcocite (Cu,S) by heating. Cu,S(s) → Cu(s) +S(5) It is favored at low temperature. It is favored at high temperatures. • It is never favored as written. Calculate AG for the overall reaction if this process is coupled to the conversion of sulfurto sulfur dioxide at 77°C. Use the table with formation constants to calculate your answer. mol Species AH (kJ/mo) As Jimol·K) 120.9 S() Cu(s) Cu ()-79.5 0) sog() -296.8 205.2 < Prev 13 of 16 !! N

Answer 1

44° (produch) - 4° (Reactant) cu acut s HP - = 2 x 0 + txo] - (-79.5) = 79.5 kg/mole. AS Rom = (2x 33 + 32.1) – (120.9) - – 22.8 of molek 4G = CHO - TOS = 79.5ximo – (2 73 +77) × (-22.8) = 87480 I ( more 44 Rom - 87. 48 kJ/mole, S (8) + O2(g) so₂ (2) - AHR = – 296.8 – [txo + 1 xo] = -296.8 ks]mote 45 = 248.2 - (32.1 + 205.2) = 10.9 J/mole-k 45º = -296.8 x loco - 350 x 10.9 = -300 615 Ilmote Add equation 0 and 2, we get. O2 + Cups 2 cu & so2 46 – 87.48 – 300.615 = F213.1 kgfarle (Answer) - – 300.615 kg/mote