MCQ
Chlorine is in $+1$ oxidation state in
- A$HCl$
- B$HCl{O_4}$
- C$ICl$
- ✓$C{l_2}O$
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$2Na(s) + 2HCl(g)\,\, \to \,\,2NaCl(s) + {H_2}(g),$$\Delta H = - 152\,kcal$ For the reaction $Na(s) + \frac{1}{2}C{l_2}(g)\,\, \to \,\,NaCl(s),\,\Delta H = $ .....$kcal$