Carbon tetrachloride, CCl4, is a liquid used as an industrial solvent and in the preparation of fluorocarbons. What is the heat of vaporization of carbon tetrachloride?
CCl4(l) †’ CCl4(g); ˆ†H° = ?
Use standard enthalpies of formation (Table 6.2).

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TABLE 6.2 Standard Enthalpies of Formation (at 25c Substance or ion Substance or ion Substance or lon HNO3 ag) S(s, monoclinic) 0.360 8 NHs aq HCHO(g)