The equilibrium constant for a reaction $A + B \rightleftharpoons C + D$ is $1 \times 10^{-3}$ at $298 \ K$ and is $2$ at $273 \ K$. The chemical reaction resulting in the formation of $C$ and $D$ is

  • A
    exothermic
  • B
    endothermic
  • C
    can't be determined
  • D
    there is no relationship between $\Delta H$ and $K$

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