A) \[2.35\times {{10}^{8}}yr\]
B) \[{{P}_{4}}/{{I}_{2}},Na,Conc.{{H}_{2}}S{{O}_{4}}\]
C) \[{{P}_{2}}{{O}_{5}},LiAl{{H}_{4}}\]
D) Data is incomplete
Correct Answer: B
Solution :
Given, \[{{\underset{electrophlie}{\mathop{C{{H}_{3}}COO-Hg}}\,}^{+}}+C{{H}_{3}}CO{{O}^{-}}\] \[C\text{ }HgOCOC{{H}_{3}}\] ?...(i) \[pH=14;\] \[\therefore \] ?... (ii) On subtracting Eq (i) from Eq (ii), we get \[pOH=0\] \[[O{{H}^{-}}]=1M\] \[[C{{u}^{2+}}]{{[O{{H}^{-}}]}^{2}}={{K}_{sp}}=1.0\times {{10}^{-19}}\] Enthalpy of combustion of one \[\therefore \] unit \[[C{{u}^{2+}}]=1.0\times {{10}^{-19}}M\] \[C{{u}^{2+}}+2{{e}^{-}}\xrightarrow{{}}Cu\] \[{{E}_{C{{u}^{2+}}/Cu}}={{E}^{o}}_{C{{u}^{2+}}/Cu}-\frac{0.0591}{2}\log \frac{1}{[C{{u}^{2+}}]}\] \[=0.34-\frac{0.0591}{2}\log {{10}^{19}}\] \[=-0.22V\]
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