- A$\frac{{d\,\ln \,K}}{{dT}} = \Delta {E^*}/RT$
- ✓$\frac{{d\,\ln \,K}}{{dT}} = \Delta {E^*}/R{T^2}$
- C$\frac{{d\,\ln \,K}}{{dT}} = - \Delta {E^*}/R{T^2}$
- D$\frac{{d\,\ln \,K}}{{dT}} = - \Delta {E^*}/RT$
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$\left[\right.$ Given $\left.: \mathrm{K}_{\mathrm{f}}\left(\mathrm{H}_{2} \mathrm{O}\right)=1.86\, \mathrm{~K}\, \mathrm{~kg}\, \mathrm{~mol}^{-1}\right]$
$A$. The chromate ion is square planar.
$B$. Dichromates are generally prepared from chromates.
$C$. The green manganate ion is diamagnetic.
$D$. Dark green coloured $\mathrm{K}_2 \mathrm{MnO}_4$ disproportionates in a neutral or acidic medium to give permanganate.
$E$. With increasing oxidation number of transition metal, ionic character of the oxides decreases.
Choose the correct answer from the options given below:
$(i)$ A $0.5\,m$ $NaBr$ solution has a higher vapour pressure than a $0.5\,m\,BaCl_2$ solution at the same temperature
$(ii)$ Pure water freezes at the higher temperature than pure methanol
$(iii)$ a $0.1\,m\,NaOH$ solution freezes at a lower temperature than pure water
Choose the correct answer from the codes given below
