8.2 Organic chemistry isomerism — Chemistry STD 11 Science — Question

$A(g) + B(g) \to C(g)$  $\Delta U=\,-\,3\,Kcal$

                                             $\Delta S=\,-\,10\,cal/K$

value of $\Delta G$ will be ......$cal$

$B.E(N -N) = 159\, kJ\, mol^{-1}$,

$B.E(H -H) = 436\, kJ\, mol^{-1}$

$B.E.(N \equiv  N) = 941\, kJ\, mol^{-1}$,

$B.E(N -H) = 398\, kJ\, mol^{-1}\, .......\,kJ\, mol^{-1}$

$CaCO _{3}( s ) \rightarrow CaO ( s )+ CO _{2}( g )$ 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 ........... $K$