Stoichiometry representing aqueous reactions

A mixed flow reactor is being used to determine the kinetics of a reaction whose stoichiometry is A R. For this purpose various flow rates of an aqueous solution of 100 mmol A/liter are fed to a 1-liter reactor, and for each run the outlet concentration of A is measured. Find a rate equation to represent the following data. Also assume that reactant alone affects the rate. 

In the case of anionic chelating extractants such as HDEHP, HDBP, HTTA or generally HA, the reaction stoichiometry with respect to the metal, Mz+, and extractant, HA, is given by equation (134). In this case, DM is given by equation (135),90 where [MAJ is the neutral extracted species and [MA ] represents all the aqueous phase species for n = 0-N of which MAX is one. A plot... 

The chemical reaction for mineral dissolution in Eq. 3.1 (the forward reaction) represents the stoichiometric decomposition of a binary solid compound into aqueous ionic species. It is an overall reaction based on a chemical formula for the solid phase and the hypothesis that free ionic species in aqueous solution will be created in proportion to their stoichiometry in the solid for at least some time... 

The early chapters in this book deal with chemical reactions. Stoichiometry is covered in Chapters 3 and 4, with special emphasis on reactions in aqueous solutions. The properties of gases are treated in Chapter 5, followed by coverage of gas phase equilibria in Chapter 6. Acid-base equilibria are covered in Chapter 7, and Chapter 8 deals with additional aqueous equilibria. Thermodynamics is covered in two chapters Chapter 9 deals with thermochemistry and the first law of thermodynamics Chapter 10 treats the topics associated with the second law of thermodynamics. The discussion of electrochemistry follows in Chapter 11. Atomic theory and quantum mechanics are covered in Chapter 12, followed by two chapters on chemical bonding and modern spectroscopy (Chapters 13 and 14). Chemical kinetics is discussed in Chapter 15, followed by coverage of solids and liquids in Chapter 16, and the physical properties of solutions in Chapter 17. A systematic treatment of the descriptive chemistry of the representative elements is given in Chapters 18 and 19, and of the transition metals in Chapter 20. Chapter 21 covers topics in nuclear chemistry and Chapter 22 provides an introduction to organic chemistry and to the most important biomolecules. 

In this section, details of an easily controllable, safe method for producing high-purity Hz gas are described. This method of generating Hz gas is particularly suitable for providing a clean source of Hz gas for use as an anodic fuel in fuel cells or as a fuel for internal combustion engines in transportation applications. This compact, portable Hz generator is based on a non-pressurized, aqueous solution of alkaline sodium borohydride (NaBH, tetrahydroborate). As found by Schlesinger et al., when aqueous NaBH, solutions contact selected metal (or metal boride) catalysts, these solutions hydrolyze to yield Hz gas and water-soluble, sodium borate. Overall reaction stoichiometry can be represented in a simplified form as ... 

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