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Rate of formation of producti.e.
$\frac{ dB }{ dt }$ increases with time $( t )$
Hence, $\frac{ dB }{ dt } \propto t$
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$A_{(s)} + B^+ \to A^+ + B_{(s)} $; $\Delta H^o = -300\,kJ$ is $70\%$.
The standard electrode potential of cell is :- .................... $\mathrm{V}$
$(I)$ ${O_3} \to $ product
$(II)$ $C{r_2}O_7^{2 - }\xrightarrow{{{H^ + }}}$ product
$(III)$ $MnO_4^\Theta \xrightarrow{{{H^ + }}}$ product
$(IV)$ $H_2S \longrightarrow $ product
${{C}_{3}}{{H}_{7}}OH\underset{160-{{180}\,^{o}}C}{\mathop{\xrightarrow{Conc.{{H}_{2}}S{{O}_{4}}}}}\,X\underset{{}}{\mathop{\xrightarrow{B{{r}_{2}}}}}\,Y\underset{Alc.KOH}{\mathop{\xrightarrow{\text{Excess of}}}}\,Z$