External links
Bryan Adams Unplugged At MTV
Category:1997 live albums
Category:1997 video albums
Category:MTV Unplugged albums
Category:Live video albums
Category:Bryan Adams video albums
Category:Albums recorded at Sony StudiosMechanism of the reaction of two molecules of the calcium hydroxide ion: a theoretical investigation.
The reaction of two Ca(OH)(2) molecules in terms of the reaction path and reaction products (neutral species or anionic species) are studied by using ab initio and density functional theory methods. The reaction of two Ca(OH)(2) molecules is of interest in the hydrolysis of cement and as a model for the interaction of two Ca(OH)(2) molecules with two bidentate ligands, such as tartrate and acetate. Two reaction paths are found, the first path (Path 1) is the intermolecular interaction between two Ca(OH)(2) molecules to form a dimer and the second path (Path 2) is the intramolecular interaction of a hydroxyl group of the Ca(OH)(2) molecule with a water molecule to form a tetrahedral complex, in which the Ca(OH)(2) molecule can be in the zwitterionic state. Both paths predict similar product structures: a Ca(OH)(2)(2+) ion and a hydroxide ion on the Ca site and a coordinated water molecule. Only Path 1 leads to an energetically more stable adduct (Path 1 is 32.0 kcal/mol less than Path 2), but this state is predicted to be kinetically favored. Path 1 is favored by the strong interaction between two Ca(OH)(2) molecules, with a reaction barrier of 64.6 kcal/mol. Path 2 needs two water molecules to form the tetrahedral complex in which the two Ca(OH)(2) molecules dissociate to form a tetrahedral complex. Path 2 has a reaction barrier of 21.3 kcal/mol and produces two products, a Ca(OH)(2)(2+) ion and a hydroxide ion. The calculated reaction mechanisms and mechanisms in terms of a reaction path and reaction products are different in the two cases. In particular, the formation of a Ca(OH)(2)(2+) ion and a hydroxide ion on the Ca site is kinetically favored in the intermolecular interaction of two Ca(OH)(2) molecules.The outside ac619d1d87
Related links:
Comments