MCQ
Cyclopentadienyl anion is
- ✓Aromatic
- BNon-aromatic
- CNon-planar
- DAliphatic
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$(i)$ $6C(s) + 3{H_2}(g) \to {C_6}{H_6}(l);\,\Delta H = + 45.9\,kJ$
$(ii)$ ${H_2}(g) + \frac{1}{2}{O_2}(g) \to {H_2}O(l);\,\Delta H = - 285.9\,kJ$
$(iii)$ $C(s) + {O_2}(g) \to C{O_2}(g);\,\Delta H = - 393.5\,kJ$
........$kJ$
$CaS{O_4}.5{H_2}{O_{(s)}}\, \rightleftharpoons \,CaS{O_4}.3{H_2}{O_{(s)}} + 2{H_2}{O_{(g)}}$ is equal to
