Chemistry

Chemistry

Problem

Consider the equilibrium 2PCl3(g)+O2(g)⇌2POCl3(g)2\mathrm{PCl_3(g)}+\mathrm{O_2(g)}\rightleftharpoons2\mathrm{POCl_3(g)} for which Kc=3.0×103K_c=3.0\times10^{3} at a certain temperature. A sealed 1.0 L vessel initially contains 1.0 mol PCl3\mathrm{PCl_3}, 4.0 mol O2\mathrm{O_2}, and 0.50 mol POCl3\mathrm{POCl_3}. Without performing detailed calculations, which species will have the highest concentration once equilibrium is re-established at this temperature? a) POCl3\mathrm{POCl_3} b) All three species will be present in roughly equal concentrations c) O2\mathrm{O_2} d) PCl3\mathrm{PCl_3}

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