Homework
Textbook assignment: Read Kotz and Triechel, Chemistry and Chemical Reactivity Chapter 6 Sections 4 to 5.
6.4 DeBroglie's equation, wavelength = h/p = h/mv, links the wave and particle properties of an object with mass m traveling at velocity v.
6.5 Heisenberg's uncertainty principle shows that we cannot know both the location and velocity of a an electron. ShrÃ¶dinger's wave equation can tell us the probability that an electron with specific characteristics lies within a given volume of space, but it can't tell us where in the space the electron is. The characteristics are defined by the four quantum numbers, n (energy level), l (angular momentum), m (magnetic orientation), and s (spin).
Principle | Formula | Notes |
---|---|---|
de Broglie Wave Equation | $$\lambda \text{}=\text{}\frac{h}{\mathrm{mv}}$$ |
λ: wavelength
m: mass v: velocity |
Quantum numbers | n = 1, 2, 3, ....
l = 0, 1, 2 ... n - 1 m_{l} = -l, ... -2, -1, 0, 1, 2, ... +l m_{s} = ± ½ |
n: energy level
l: orbital angular momentum (orbital shape) m_{l}: magnetic quantum number (orientation of orbital) m_{s}: electron spin |
Read the following weblecture before chat: Atomic Spectra
Review the Videos at Thinkwell Video Lessons.
Use the simulation activity below to fire lightbeams of different energy levels at different molecules. Observe
Carry out the iodine-oxalate reaction and use your standard set of concentrations to estimate reaction concentration levels at regular intervals. Record concentrations and note when your reaction reaches equilibrium.
References:
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