题目:
(1)室温下,将2克液态苯(C6H6)完全燃烧生成液态水和CO2,放出83.6KJ的热量,写出C6H6燃烧的热化学方程式:______.
(2)由金红石(TiO2)制取单质Ti,涉及到的步骤为:TiO2 →TiCl4
Ti 铁/1800℃/Ar
已知:①C(s)+O2(g)=CO2(g);△H=-393.5kJ•mol-1
②2CO(g)+O2(g)=2CO2(g);△H=-566kJ•mol-1
③TiO2(s)+2Cl2(g)=TiCl4(s)+O2(g);△H=+141kJ•mol-1
则TiO2(s)+2Cl2(g)+2C(s)=TiCl4(s)+2CO(g)的△H=______.
答案:
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