p -Block elements - ll — Chemistry STD 12 Science — Question

$pH$ values of $x$ and $y$ are respectively

${{C}_{6}}{{H}_{6}}+C{{H}_{3}}CH=C{{H}_{2}}\xrightarrow[heat]{{{H}_{3}}P{{O}_{4}}}A\xrightarrow[2.\,{{H}_{3}}{{O}^{+}},heat]{1.\,{{O}_{2}},heat}B+C$

The products $(B)$ and $(C)$ are

${A_{\left( s \right)}} + {B^ \oplus } \longrightarrow {A^ \oplus } + {B_{\left( s \right)}}\,;\,\Delta {H^o} =  - 551.5\,KJ$ Calculate standard electrode potential of cell (in $volt$). .......... $\mathrm{volt}$

Reason : $S_8$ has a $V-$ shape.