All of the following are true of standard cell potentials EXCEPT: (Select all that apply.) Select all that apply: A galvanic cell generates electric current spontaneously only if the cell potential is positive. The anode is the species with the greater standard reduction potential. Standard cell potential is dependent on the stoichiometry of the overall reaction. A galvanic cell generates electric current spontaneously only if the cell potential is negative.

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. despite not knowing mechanistic details of the adsorption of water onto silica gel, from the information provided you should be able to make an educated guess about the thermodynamic characteristics of the process. predict the signs for δg, δh, and δs for the adsorption of water.