The small bags of silica gel you often see in a new shoe box are placed there to

Question

The small bags of silica gel you often see in a new shoe box are placed there to control humidity. Despite its name, silica gel is a solid. It is a chemically inert, highly porous, amorphous form of SiO2. Because water vapor readily adsorbs onto the surface of silica gel, it acts as a desiccant. mechanistic details of the adsorption of water onto silica gel, from the information be able to make an educated guess about the thermodynamic characteristics of the Despite not process. Predict the signs for G, and AS for the adsorption of water. 8 9 Hint

Explanation / Answer

Water spontaneously freezes at -10C, so G is negative. Energy is released as water freezes, therefore, H is negative. As water freezes there are fewer micro-states in which the molecules exist, therefore, entropy decreases, and S is negative.

Therefore  all <0.

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