MCQ
VBT theory is based on the:
- AKnowledge of atomic orbitals and electronic configuration of elements.
- BOverlapping criteria and the hybridisation of atomic orbitals.
- CThe principles of variation and superposition.
- DAll of the above.
Explanation:
VBT is based on all the given criteria.
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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 ........... $K$
Here $X, Y$ are respectively