Which of the following statements of correct for the spontaneous adsoption of a gas?A. `DeltaS` is negative and therefore, `DeltaH` should be highly positiveB. `DeltaS` is negative and therefore, `DeltaH` should be highly negativeC. `DeltaS` is positive and therefore, `DeltaH` should be negativeD. `DeltaS` is positive and therefore, `DeltaH` should also be highly positive

Which of the following statements of correct for the spontaneous adsop

1.	Which of the following statements of correct for the spontaneous adsoption of a gas?A. `DeltaS` is negative and therefore, `DeltaH` should be highly positiveB. `DeltaS` is negative and therefore, `DeltaH` should be highly negativeC. `DeltaS` is positive and therefore, `DeltaH` should be negativeD. `DeltaS` is positive and therefore, `DeltaH` should also be highly positive
Answer» Correct Answer - B `DeltaS` [change in entropy] and `DeltaH` [change in enthalpy are related by the equation `DeltaG = DeltaH - TDeltaS` [Here, `DeltaG` = change in Gibbs free energy] For adsorption of a gas, `DeltaS` is negative because randomness decreases. Thus, in order to make `DeltaG` negative [for spontaneous reaction]. `DeltaH` must be highly negative because reaction is exothermic. Hence, for the adsorption of a gas, if `DeltaS` is negative, therefore, `DeltaH` should be highly negative, therefore, `DeltaH` should be highly negative.