Which one of the following is correct for the adsorption of a gas at a given temperature on a solid surface?

  • A
    $\Delta H > 0, \Delta S > 0$
  • 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

The given graphs $I$,$II$,$III$,and $IV$ represent general trends observed for different physisorption and chemisorption processes under mild conditions of temperature and pressure. Which of the following choice$(s)$ about $I$,$II$,$III$,and $IV$ is (are) correct?
$(A)$ $I$ is physisorption and $II$ is chemisorption
$(B)$ $I$ is physisorption and $III$ is chemisorption
$(C)$ $IV$ is chemisorption and $II$ is chemisorption
$(D)$ $IV$ is chemisorption and $III$ is chemisorption

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