Which of the following conditions regarding a chemical process ensures its spontaneity at all temperatures?

  • A
    $\Delta H > 0, \Delta G = 0$
  • B
    $\Delta H < 0, \Delta S > 0$
  • C
    $\Delta H < 0, \Delta S < 0$
  • D
    $\Delta H > 0, \Delta S < 0$

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Similar Questions

Based on the provided table, which of the following options correctly identifies the spontaneous reactions?
$\Delta_r H^{\circ}$$\Delta_r S^{\circ}$$\Delta_r G^{\circ}$Spontaneity of the reaction
$A$$+$$+$$+$Spontaneous at low $T$
$B$$+$$+$$-$Spontaneous at high $T$
$C$$-$$-$$-$Spontaneous at low $T$
$D$$+$$-$$+$Spontaneous at high $T$

The maximum work (in $kJ \, mol^{-1}$) that can be derived from the complete combustion of $1 \, mole$ of $CO$ at $298 \, K$ and $1 \, atm$ is:
[Standard enthalpy of combustion of $CO = -283.0 \, kJ \, mol^{-1}$; standard molar entropies: $S_{O_2} = 205.1 \, J \, K^{-1} \, mol^{-1}$,$S_{CO} = 197.7 \, J \, K^{-1} \, mol^{-1}$,$S_{CO_2} = 213.7 \, J \, K^{-1} \, mol^{-1}$]

For a spontaneous change,free energy change $\Delta G$ is

Calculate the value of $\Delta G$ for the following reaction at $300 \ K$.
$H_2O_{(s)} \longrightarrow H_2O_{(l)}$
$(\Delta H = 7 \ kJ, \Delta S = 24.8 \ J \ K^{-1})$

The standard reaction Gibbs energy for a chemical reaction at an absolute temperature $T$ is given by $\Delta_{r}G^{o} = A - BT$,where $A$ and $B$ are non-$zero$ constants. Which of the following is $TRUE$ about this reaction?

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