MCQ
Highest entropy is in
- ✓Hydrogen
- BWater
- CGraphite
- DMercury
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$Zn + HN{O_3}(Dilute)\, \to \,Zn{(N{O_3})_2} + P\, \uparrow $
End product $(X)$ of the above reaction is
$(i)\, 6C(s) + 3H_2(g) \to C_6H_6(l) ; \Delta H = +45.9\,kJ$
$(ii)\, H_2(g) +\frac {1}{2}O_2(g) \to H_2O(l) ; \Delta H = -285.9\,kJ$
$(iii) \,C(s) + O_2(g) \to CO_2(g) ; \Delta H = -393.5\,kJ$
.....$kJ$
${{H}_{2}}+C{{l}_{2}}\xrightarrow{\text{Sunlight}}2HCl$