已知：TiO2(s)＋2Cl2(g)===TiCl4(l)＋O2(g) ΔH＝＋140 kJ·mol－1 2C(s)＋O2(g)===2

已知：TiO₂(s)＋2Cl₂(g)===TiCl₄(l)＋O₂(g) ΔH＝＋140 kJ·mol^－¹

2C(s)＋O₂(g)===2CO(g)　ΔH＝－221 kJ·mol^－¹

则反应TiO₂(s)＋2Cl₂(g)＋2C(s)＝TiCl₄(l)＋2CO(g)　ΔH为

A．—162 kJ·mol^－¹ B．＋81 kJ·mol^－¹

C．＋162 kJ·mol^－¹ D．－81 kJ·mol^－¹

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已知：TiO2(s)＋2Cl2(g)===TiCl4(l)＋O2(g) ΔH＝＋140 kJ·mol－1 2C(s)＋O2(g)===2

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