MCQ
The strongest acid is
- A$HA_1\,\,(pK_a = 10)$
- B$HA_2\,\,(K_a = 10^{-4})$
- ✓$HA_3\,\,(pK_a = 2)$
- D$HA_4\,\,(K_a = 10^{-7})$
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The Compound $B$ is
Between the two tautomers which is more stable ?
$\Delta {H_{{\rm{System}}}} = 2000\ kJ/mol$
$T = 400\ K$
Find out value of $\Delta {S_{{\rm{System}}}}$..........$ kJ/mol-K$
$C{u^{2 + }}_{{\text{(aq)}}}\, + \,\,{e^ - }\, \to \,C{u^ + }_{{\text{(aq)}}}$
and $C{u^+}_{{\text{(aq)}}}\, + \,\,{e^ - }\, \to \,C{u }_{{\text{(s)}}}$
are $+0.15\,V$ and $+0.50\,V$ respectively. The value of will be ............ $\mathrm{V}$