Macmillan Learning 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. Water vapor readily adsorbs onto the surface of silica gel, so 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 of AG, AH, and AS. Predict the sign of AG. AG 0 AG <0 AG=0 Predict the sign of AS. AS=0 AS> 0 AS <0 Predict the sign of AH. Ο ΔΗ > 0 Ο ΔΗ < 0 Ο ΔΗ = 0

Macmillan Learning 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. Water vapor readily adsorbs onto the surface of silica gel, so 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 of AG, AH, and AS. Predict the sign of AG. AG 0 AG <0 AG=0 Predict the sign of AS. AS=0 AS> 0 AS <0 Predict the sign of AH. Ο ΔΗ > 0 Ο ΔΗ < 0 Ο ΔΗ = 0

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter9: Liquids, Solids, And Materials

Section: Chapter Questions

Problem 92QRT

See similar textbooks

Similar questions

What is the role of methanol in the deposition of thin films of semiconductor materials via Aerosol Assisted chemical vapor deposition (AACVD)
Why is radius of gyrations important to catalysis Please explain and give some examples
In this figure, a polar stratospheric cloud (PSC) ice crystal is displayed. Chemical reactions that lead ultimately to ozone destruction occur within the thin aqueous layer present at the surface of the crystal. CIONO, B HCI A1 crystal aqueous layer For the reaction labeled as A, the CIONO2 reacts with the aqueous surface layer. Identify species A1 and A2 (note: you only need to identify the species; the order listed is not important). Note: If a species is charged, be sure to include the charge. You do not have to subscript/superscript. For example, NO2 would be written NO2-. А1:
The amount of saturation not only has an effect on the chemical but also the physical properties of the fat. For example, animal fat which is about half saturated and half unsaturated fat is a solid at room temperature but vegetable fat which is about 85 % unsaturated fat is a liquid at room temperature. This is because saturated fats are more linear compared to unsaturated which are nonlinear (bent), meaning that saturated fats are capable of more of what kind of interaction? Hydrogen bonding van der Waals Ionic bonding Covalent bonding
Consider we have a silicate glass composition, this composition as shown below in percent by weight 15Na₂O +5K₂O + 2.5MgO +9.5 CaO +6 BaO + 5Al₂O3 +57 SiO₂. First, convert this composition to mole percent. Then classify each oxide added to the glass according to Sun's bond criteria. According to this classification, is this composition make glass or not? Min MO K Mg Ca Al Si Valance 1 1 2 2 2 3 4 Dissociation energy per MOX (in Kcal.) 120 115 222 257 260 402 424 Coordination Number 6 9 6 8 8 4 4 Molecular weight of oxides is shown below Oksitier (Molekil Agri): NajO (61.97), K,0 (94.18), MgO (40.31), CaO (56.08), Bao (153.33), ALO, (1015), 50, (60.08) Single Bond Strength (Kcal/mole) 20 13 37 32 33 101 106
Calculate the lattice enthalpy of AgCl (s) using the following thermodynamic data. Note that the data given has been perturbed, so looking up the answer is probably not a good idea. CI - CI (g) Enthalpy of dissociation = 223 kJ/mol Ag (g) 265 kJ/mol Cl (g) Enthalpy of formation Electron attachment enthalpy Enthalpy of ionization Enthalpy of formation = -147 kJ/mol Ag (g) 711 kJ/mol AgCl (s) = = = -369 kJ/mol kJ/mol Do you expect the magnitude (absolute value) of this to be larger or smaller than the lattice enthalpy of AgBr (s)?
How do calcium ions in water affect the textural properties of products during cooking in water? please explain detailed
Why does rate of physical adsorption depends upon pressure, temperature, and surface area?
Analyze both structures of silica gel and alumina and discuss whether these stationary phases are polar or nonpolar. Justify your answer.
Explain why each molecule has a higher melting point than the other in the pair. Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer. Reset has a higher molar mass The main reason why Ti(s) has a higher melting point than Ne(s) is that Ti(s) has stronger dipole-dipole interactions The main reason why Fe(s) has a higher melting point than CCl (s) is that Fe(s) is an ionic compound can form hydrogen bonds The main reason why KCI(s) has a higher melting point than HCI(s) is that KCI(s) has metallic bonds The main reason why H20(s) has a higher melting point than H2S(s) is that H2O(s)
Explain and sketch the Born-Mayer equation to determine the crystallization energy of NaCl and MgCl2
Make a table for comparison between the interior angles of the seven (7) unit cells and explain.There are seven types of unit cells: (1) simple cubic, (2) tetragonal, (3) orthorhombic, (4) rhombohedral, (5) monoclinic, (6) triclinic, and (7) hexagonal.