MCQ
Molecular weight of an organic acid is given by
- ✓Equivalent weight $\times$ basicity
- B$\frac{{{\rm{Equivalent \,weight}}}}{{{\rm{Basicity}}}}$
- C$\frac{{{\rm{Basicity}}}}{{{\rm{Equivalent \,weight}}}}$
- DEquivalent weight $\times$ valency
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$CaCO _{3}( s ) \rightarrow CaO ( s )+ CO _{2}( g )$ the values of $\Delta H ^{\circ}$ and $\Delta S^{\circ}$ are $+179.1 kJ mol ^{-1}$ and $160.2\,J / K$ respectively at $298 \,K$ and $1 \,bar$. Assuming that $\Delta H ^{\circ}$ and $\Delta S ^{\circ}$ do not change with temperature, temperature above which conversion of lime-stone to lime will be spontaneous is ........... $K$