$2 A ( g ) \rightarrow A _{2}( g )$
$298\, K$ પર $\Delta U^ \ominus,=-20\, kJ\, mol ^{-1}, \Delta S \odot=-30\, J$$K ^{-1}\, mol ^{-1},$ પછી $\Delta G ^{\ominus}$ ........$J$ હશે?
$C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O ; \Delta H = -2900 \,KJ/mole $
$NH _{2} CN _{( s )}+\frac{3}{2} O _{2}( g ) \rightarrow N _{2( g )}+ O _{2}( g )+ H _{2} O _{(l)}$
$\Delta H _{298}$ ની માત્રા ........ $kJ$ છે. (નજીક પૂર્ણાંક રાઉન્ડ ઓફ)
[ધારી લો આદર્શ વાયુઓ અને $\left. R =8.314\, J\, mol ^{-1} K ^{-1}\right]$
$H_2$$_{(g)} +$ $1/2O_2$ $_{(g)}$ $\rightarrow$ $H_2$$O$$_{(l)}$; $\Delta H= -$ $285.77\, KJ\, mol$$^{-1}$; $H_2$$_{(g)} +$ $1/2O_2$$_{(g)}$ $\rightarrow$ $H_2O$ $_{(g)}$; $\Delta H$ $ = - 241.84\, KJ \,mol$$^{-1}$