MCQ
${C_6}{H_6}C{l_6}$, on treatment with alcoholic $KOH$, yields
- A${C_6}{H_6}$
- ✓${C_6}{H_3}C{l_3}$
- C$({C_6}{H_6})\;OH$
- D${C_6}{H_6}C{l_4}$
Thus Benzene hexahalides decomposes when heated with alc. $ KOH $ and yield trichloro benzene.
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$C(s) + O_2(g) \to CO_2(g) + x\ kJ$
$CO(g) + \frac {1}{2}O_2(g) \to CO_2(g) + y\,kJ$
The heat of formation of $CO(g)$ is