4.1. Show that the wavefunction ? = A sin(kx) + B cos(kx), where A, B and k are constants, is a solution of the one-dimensional Schrödinger equation, and hence derive an expression for the energy.
Added by Thomas B.
Close
Step 1
\[ -\frac{\hbar^2}{2m} \frac{d^2 \psi}{dx^2} + V(x) \psi = E \psi \] where \(\hbar\) is the reduced Planck's constant, \(m\) is the mass, \(V(x)\) is the potential energy, \(E\) is the energy, and \(\psi\) is the wavefunction. Show more…
Show all steps
Your feedback will help us improve your experience
Dinesh Singh and 53 other Chemistry 101 educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
What is the kinetic energy of a particle described by the wavefunction cos kx? Construct the potential energy operator of a particle with potential energy V(x) = De(1-e-ax)2, where De and a are constants.
Sri K.
Consider a particle in a box of length L in one dimension (direction x for example) The potential energy is given by: V(x) = { 0 if 0 ≤ x ≤ L, ∞ otherwise 1- Give the time-independent Schrödinger equation of the particle. 2- The solution of the Schrödinger equation is written as the form: Ψ = A sin(kx) + B cos(kx) Determine the expression of the energy of the particle. 3- Use the boundary conditions Ψ(0) = Ψ(L) = 0, prove that the wave vector is written as: k = nπ/L 4- Use the normalization of the wavefunction, determine the constant A and deduce the expression of the wave function Ψ(x) and the energy E. 5- Give the energy diagram of the first five energy levels. 6- Conclude.
The wave function of a quantum particle is $$ \psi(x)=A \cos (k x)+B \sin (k x) $$ where $A, B,$ and $k$ are constants. Show that $\psi$ is a solution of the Schrödinger equation (Eq. $41.15 ),$ assuming the particle is free $(U=0),$ and find the corresponding the energy $E$ of the particle.
Recommended Textbooks
Chemistry: Structure and Properties
Chemistry The Central Science
Chemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD