chemistry
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Professor Sylvia Ceyer discusses the nature of chemical equilibrium as it relates to free energy, the reaction quotient, and the relationship between K and Q. The meaning of K is further clarified and the external effects on K are identified, from adding and removing reagents to changes associated with the Principle of Le Chatelier.
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Professor Sylvia Ceyer continues her discussion on chemical equilibrium and external effects such as a change in volume, adding inert gas, and a change in temperature. Parameters are set for maximizing the yield of a reaction, and the Principle of Le Chatelier's is returned to. Hemoglobin is used as an example involved in a series of equilibrium reactions in response to oxygen pressure.
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Professor McBride begins by using previous examples of "pathological" bonding and the BH3 molecule to illustrate how a chemist's use of localized bonds, vacant atomic orbitals, and unshared pairs to understand molecules compares with views based on the molecule's own total electron density or on computational molecular orbitals. This lecture then focuses on understanding reactivity in terms of the overlap of singly-occupied molecular orbit...more
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Videos on chemistry (roughly covering a first-year high school or college course).
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