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?

  • A
    Endothermic if $A > 0$
  • B
    Exothermic if $A > 0$ and $B < 0$
  • C
    Endothermic if $A < 0$ and $B > 0$
  • D
    Exothermic if $B < 0$

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