Heisenberg Uncertainty Principle Post-Module Assessment


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Ben 1B
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Heisenberg Uncertainty Principle Post-Module Assessment

Postby Ben 1B » Sat Oct 12, 2019 4:11 pm

What are the necessary steps and formulas to answer question number 18 from the Heisenberg Uncertainty Principle Post-Module Assessment?
18. The hydrogen atom has a radius of approximately 0.05 nm. Assume that we know the position of an electron to an accuracy of 1 % of the hydrogen radius, calculate the uncertainty in the speed of the electron using the Heisenberg uncertainty principle.

Chem_Mod
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Re: Heisenberg Uncertainty Principle Post-Module Assessment

Postby Chem_Mod » Sat Oct 12, 2019 4:42 pm

Use heisenberg's uncertainty principle deltap * deltax >/= h/4pi, where delta p = m * delta v. Find delta x using the given information: you have the radius of H and know that delta x is 1% of radius of H. Plug this into the equation along with mass of the electron and Planck's constant and solve for delta v, the uncertainty in speed.

Ruth Glauber 1C
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Re: Heisenberg Uncertainty Principle Post-Module Assessment

Postby Ruth Glauber 1C » Sun Oct 13, 2019 11:01 pm

Why is there a difference in calling it the uncertainty vs undeterminability principle?


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