Asked by Katherine
Is it even possible to guess the signs of Delta H, S, and G from only knowing the following information?:
- Silica gel is a solid.
- Chemically inert.
- Highly porous.
- Amorphous form of SiO2.
- Water vapor is absorbed onto the surface of silica gel and acts as a desiccant to control humidity
- Silica gel is a solid.
- Chemically inert.
- Highly porous.
- Amorphous form of SiO2.
- Water vapor is absorbed onto the surface of silica gel and acts as a desiccant to control humidity
Answers
Answered by
DrBob222
I think it is but I don't think everything can be guessed. For example, if we know it picks up water vapor then
silica gel + H2O ==> SiO2(H2O)x probably is -dS since the H2O is "trapped" in the crystal and there is less randomness. Since it picks up water spontaneously, it probably has -dG for that. and so on.
silica gel + H2O ==> SiO2(H2O)x probably is -dS since the H2O is "trapped" in the crystal and there is less randomness. Since it picks up water spontaneously, it probably has -dG for that. and so on.
Answered by
Katherine
oh yeah i didn't see it that way thanks dr. bob!
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