Given the thermochemical equations: Br2(l) 1 F2(g) 2BrF(g) H 5 2188 kJ/mol Br2(l) 1 3F2(g) 2BrF3(g) H 5 2768 kJ/mol calculate the DH8rxn for the reaction BrF(g) 1 F2(g) BrF3(g)
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Adeline Fecker January 31st, 2017 CH 222 Lecture Notes Week 4 Last Week: ❖ VSEPR THeory ❖ Bond Angles, deviations from ideal angles ❖ More than one central atom Now: ❖ Molecular Polarity ❖ Bond polarity and Shape Polarity of a Molecule ➢ Measured by its dipole moment ➢ In magnetic field, polar molecules will become oriented so the negative end is facing the positive plate ➢ Depends on the shape and polar bonds ➢ If vectors add up to 0 then it is not polar ➢ It is polar if it contains one or more polar bonds and the individual dipoles do not cancel out ➢ Think about electronegativity and geometry
Author: Raymond Chang; Kenneth Goldsby
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