MCQ
What is not correct about $[Fe(H_2O)_5NO]^{+2}$ ?
- AOxidation number of metal is $+1$
- BCoordination number of metal is $6$
- CIt is a tetrahedral complex
- DLigand $NO$ carries unit positive charge
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$Cu_{(s)} + 2Ag^+_{(aq)} \rightarrow Cu^{2+}_{(aq)} + 2Ag_{(s)}\,;$
$E^o = 0.46\, V$ at $298\, K$ is

Step $I\,\,:$ ${H_2}O(g)\, \to \,H(g)\, + \,OH(g)\,;$ $\Delta H = 498\,kJ\,mol^{-1}$
Step $II\,\,:$ $OH(g)\, \to \,H(g)\, + \,O(g)\,;$ $\Delta H = 428\,kJ\,mol^{-1}$
The bond enthalpy of the $O-H$ bond is....$kJ\,mol^{-1}$