SF Chemical Kinetics Michaelmas 2011 L5
... gas phase reactions. • We focus attention on gas phase reactions and assume that chemical reactivity is due to collisions between molecules. • The theoretical approach is based on the kinetic theory of gases. • Molecules are assumed to be hard structureless spheres. Hence the model neglects the disc ...
... gas phase reactions. • We focus attention on gas phase reactions and assume that chemical reactivity is due to collisions between molecules. • The theoretical approach is based on the kinetic theory of gases. • Molecules are assumed to be hard structureless spheres. Hence the model neglects the disc ...
Chapter 11 Chemical Reactions
... Fe + O2 (assume iron (II) oxide is the product) Al + O2 Remember that the first step is to write the correct formulas – you can still change the subscripts at this point, but ...
... Fe + O2 (assume iron (II) oxide is the product) Al + O2 Remember that the first step is to write the correct formulas – you can still change the subscripts at this point, but ...
Equilibrium (Sheet 1)
... Section III La Chatelier's principle states that if a stress such as a change in concentration, pressure or temperature is applied to a system in equilibrium, the equilibrium will shift in a way that tends to undo the effect of the stress. For example: H2O + CO H2 + CO2 + heat. If no stress is intro ...
... Section III La Chatelier's principle states that if a stress such as a change in concentration, pressure or temperature is applied to a system in equilibrium, the equilibrium will shift in a way that tends to undo the effect of the stress. For example: H2O + CO H2 + CO2 + heat. If no stress is intro ...
Chapter 12 Review “Stoichiometry”
... Which type of stoichiometric calculation does not require the use of the molar mass? ...
... Which type of stoichiometric calculation does not require the use of the molar mass? ...
Selenium dioxide catalysed oxidation of acetic acid hydrazide by
... the species involved in the prior equilibria (Eq. 11, scheme 1) of the reaction would be H2 SeO3 . The formation diimide intermediates have been proposed during oxidative conversion of hydrazine moiety by various oxidizing reagents. 1,18 Since the reaction did not follow the Michealis–Menten type of ...
... the species involved in the prior equilibria (Eq. 11, scheme 1) of the reaction would be H2 SeO3 . The formation diimide intermediates have been proposed during oxidative conversion of hydrazine moiety by various oxidizing reagents. 1,18 Since the reaction did not follow the Michealis–Menten type of ...
Colour Chemistry
... Project examples: Please come and discuss, we'll work out a project based on your skills. Example titles: Iron nano particle hyrdogen transfer catalysis, Continuous production of Zinc Oxide ...
... Project examples: Please come and discuss, we'll work out a project based on your skills. Example titles: Iron nano particle hyrdogen transfer catalysis, Continuous production of Zinc Oxide ...
Chemical reactions alter arrangements of atoms.
... however, more surfaces are exposed. The amount of material does not change, but breaking it into smaller parts increases its surface area. Increasing the surface area increases the rate of the reaction. Check Your Reading ...
... however, more surfaces are exposed. The amount of material does not change, but breaking it into smaller parts increases its surface area. Increasing the surface area increases the rate of the reaction. Check Your Reading ...
- Cypress HS
... concentrations of all reactants remain constant with time. The position of equilibrium is described by a function called the equilibrium constant, Kc, which is the ratio of the amount of product present to the amount of reactant remaining once the point of equilibrium has been reached. You will dete ...
... concentrations of all reactants remain constant with time. The position of equilibrium is described by a function called the equilibrium constant, Kc, which is the ratio of the amount of product present to the amount of reactant remaining once the point of equilibrium has been reached. You will dete ...
Sustainable Oxidation Catalysis for Synthesis
... problematic on a larger scale. There is a need to develop efficient catalysts that use sustainable terminal oxidants such as molecular oxygen or hydrogen peroxide. Although such methods are employed in the preparation of commodity chemicals, they are rarely used for the synthesis of fine chemicals, ...
... problematic on a larger scale. There is a need to develop efficient catalysts that use sustainable terminal oxidants such as molecular oxygen or hydrogen peroxide. Although such methods are employed in the preparation of commodity chemicals, they are rarely used for the synthesis of fine chemicals, ...
Supramolecular catalysis
Supramolecular catalysis is not a well-defined field but it generally refers to an application of supramolecular chemistry, especially molecular recognition and guest binding, toward catalysis. This field was originally inspired by enzymatic system which, unlike classical organic chemistry reactions, utilizes non-covalent interactions such as hydrogen bonding, cation-pi interaction, and hydrophobic forces to dramatically accelerate rate of reaction and/or allow highly selective reactions to occur. Because enzymes are structurally complex and difficult to modify, supramolecular catalysts offer a simpler model for studying factors involved in catalytic efficiency of the enzyme. Another goal that motivates this field is the development of efficient and practical catalysts that may or may not have an enzyme equivalent in nature.A closely related field of study is asymmetric catalysis which requires molecular recognition to differentiate two chiral starting material or chiral transition states and thus it could be categorized as an area of supramolecular catalysis, but supramolecular catalysis however does not necessarily have to involve asymmetric reaction. As there is another Wikipedia article already written about small molecule asymmetric catalysts, this article focuses primarily on large catalytic host molecules. Non-discrete and structurally poorly defined system such as micelle and dendrimers are not included.