【简答题】![](https://cos-cdn.shuashuati.com/shuashuati-web/2024-0521-0905-00/logo-new-ad743.png)
钛(Ti)被称为继铁、铝之后的第三金属。由金红石(TiO2) 制取单质Ti,涉及的步骤为:TiO2→TiCl4
已知:①C(s)+O2(g)=CO2(g) △H=-393.5kJ/mol ②2CO(g)+O2(g)=2CO2(g) △H=-566kJ/mol③TiO2(s)+2Cl2(g)=TiCl4(s)+O2(g) △H=+141kJ/mol 则TiO2(s) +2Cl2(g)+2C(s)=TiCl4(s)+2CO(g)的△H=____________。反应TiCl4+2Mg=2MgCl2+Ti在Ar气氛中进行的理由是_____________________。
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAA5ElEQVRYR2NkGGDAOMD2M+B0wKpVq9huv/jbxPD/fxwDA4MkhQ59zsDIuEhVgrkuLCzsF7JZOB3QOml5B8P//+UUWoyqnZGxszovsoI4B0xc9gyfzxmZmb2rcsK3IRvWMWm599///7fgcfTz6vwoKWId8B+f75kZGX0q8iK3kugAhur8KJRQxx0FE5fhdQC5UTPqgNEQGA2B0RAYDYHREBgNgaETAuTW96TqG7yt4tbRFhGRIQBqHTP9+8dIoDUMTxqk5AK8zXKYiaDWMYhNpANIaJYPdMdkwLtmpOZnctUPeDkAAP6tmiH1ggTLAAAAAElFTkSuQmCC)
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