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【单选题】
下表列出部分化学键的键能: 化学键 Si - O Si - Cl H - H H - Cl Si - Si Si - C Cl - Cl 键能 /kJ•mol - 1 460 360 436 431 176 347 243 据此判断下列说法正确的是( )A.
表中最稳定的共价键是Si﹣Si
B.
Cl 2 (g)→2Cl(g):△H=﹣243 kJ•mol -1
C.
H 2 (g)+Cl 2 (g)=2HCl(g):△H=﹣183 kJ•mol -1
D.
根据表中数据能计算出SiCl 4 (g)+2H 2 (g)=Si(s)+4HCl(1)的△H
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