The crystalline hydrate Cd1NO322 #4H2O1s2 loses water when placed in a large, closed, dry vessel at room temperature: Cd1NO322 #4H2O1s2¡Cd1NO3221s2 + 4 H2O1g2 This process is spontaneous and ΔH° is positive at room temperature. (b) If the hydrated compound is placed in a large, closed vessel that already contains a large amount of water vapor, does ΔS° change for this reaction at room temperature?