Chemistry

Chemistry

Problem

Titanium metal is extensively used in aerospace industry because the metal imparts strength to structures but does not unduly add to their masses. The metal is produced by the reduction of TiCl4(l)\text{TiCl}_4(\text{l}) which in turn is produced from mineral rutile TiO2(s)\text{TiO}_2(\text{s}) . Can the following reaction for production of TiCl4(l)\text{TiCl}_4(\text{l}) be carried out at 25°C? TiO2(s)+2Cl2(g)⟶TiCl4(l)+O2(g)\text{TiO}_2(\text{s}) + 2\text{Cl}_2(\text{g}) \longrightarrow \text{TiCl}_4(\text{l}) + \text{O}_2(\text{g}) Given that, Hf∘H_f^\circ for TiO2(s)\text{TiO}_2(\text{s}) , TiCl4(l)\text{TiCl}_4(\text{l}) , Cl2(g)\text{Cl}_2(\text{g}) and O2(g)\text{O}_2(\text{g}) are −944.7-944.7 , −804.2-804.2 , 0.00.0 , 0.0 kJ mol−10.0 \text{ kJ mol}^{-1} . Also S∘S^\circ for TiO2(g)\text{TiO}_2(\text{g}) , TiCl4(l)\text{TiCl}_4(\text{l}) , Cl2(g)\text{Cl}_2(\text{g}) and O2(g)\text{O}_2(\text{g}) are 50.3, 252.3, 233.0, 205.1 J mol−1 K−1\text{J mol}^{-1} \text{ K}^{-1} respectively.

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