• Reaction is non-spontaneous at room temperature, but becomes spontaneous at temperature above 842 K. Reaction is endothermic with an increase in entropy due to the production of a gas.
  • At any temperature higher than 835°C, the value of  will be negative and the decomposition reaction will be spontaneous.
  • At lower temperatures, the amount of products formed is simply not great enough to say that the products are favored.
  • The pressure of CO2 at equilibrium gradually increases with increasing temperature.
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