- A$Al{(OH)_3},\;LiOH$
- B$Be{(OH)_2},\;Mg{(OH)_2}$
- C$B{(OH)_3},\;Be{(OH)_2}$
- ✓$Be{(OH)_2},\;Zn{(OH)_2}$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$E^o (Fe^{+2}, Fe) = -0.44$ $ V$
$E^o (Zn^{+2}, Zn) = -0.76$ $ V$
$E^o (Cu^{+2}, Cu) = +0.34$ $V$
$E^o (Cr^{+2}, Cr) = -0.74$ $V$
$E^o (H^+, 1/2H_2) = -0.00$ $V$

$S\left( s \right) + {O_2}\left( g \right) \rightleftharpoons S{O_2}\left( g \right);{K_1} = {10^{52}}$
$2S\left( s \right) + 3{O_2}\left( g \right) \rightleftharpoons 2S{O_3}\left( g \right);{K_2} = {10^{129}}$
The equilibrium constant for the reaction $2S{O_2}\left( g \right) + {O_2}\left( g \right) \rightleftharpoons 2S{O_3}\left( g \right)$ is
$Xe{F_6}\,\xrightarrow{{ + {H_2}O}}A\,\xrightarrow{{ + {H_2}O}}B\,\xrightarrow{{ + {H_2}O}}C$
In the above chemical reaction, intermediate $"X"$ and reagent/condition $"A"$ are