
- Adil. $D_2SO_4$
- B$\xrightarrow[{2.NaB{D_4}}]{{1.Hg\,{{(OAc)}_2},{D_2}O}}$
- C$\xrightarrow[{2.{D_2}O,AcOD}]{{1.{B_2}{D_6}}}$
- ✓$\xrightarrow[{2.{D_2}{O_2},NaOD}]{{1.{B_2}{D_6}}}$


Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$2 A ( g ) \rightleftharpoons A _{2}( g )$
at $400\, K$ has $\Delta G ^{\circ}=+25.2\, kJ mol ^{-1}$.
The equilibrium constant $K _{ C }$ for this reaction is $...... \times 10^{-2}$. (Round off to the Nearest integ $\left[\right.$ Use $: R=8.3\, J mol ^{-1} K ^{-1}, \ln 10=2.3$
$\left.\log _{10} 2=0.30,1\, atm =1\, bar \right]$
$[$ antilog $(-0.3)=0.501]$
Reason : In mercury cell, the electrolyte is a paste of $KOH$ and $ZnO$.
Choose the correct statement($s$).
$(A)$ The order of basicity is $II > I > III > IV$ .
$(B)$ The magnitude of $p K_{ b }$ difference between $I$ and $II$ is more than that between $III$ and $IV$.
$(C)$ Resonance effect is more in $III$ than in $IV$.
$(D)$ Steric effect makes compound $IV$ more basic than $III$.
