Physical Chemistry Answers

Show that if two equivalent hybrid orbitals of the form spλ make an angle θ to each other, then λ = ±(−1/cos θ)1/2. Plot a graph of λ against θ and confirm that θ = 180° when no s orbital is included and θ = 120° when λ = 2.

Use the wavefunction for a H1s orbital to write a valence-bond wavefunction of the form Ψ(1,2) = A(1)B(2) + A(2)B(1) in terms of the Cartesian coordinates of each electron, given that the internuclear separation (along the z-axis) is R.

Account for the ability of phosphorus to form five bonds, as in PF5.

The decomposition of hydrogen iodide and 323K with an initial concentration of HI to be 0.500 M.The reaction followed zero order kinetics with a rate constant of 1.20× 10^(-4)M s^(-1) Calculate the i) half -life of the reaction and ii) rate constant of be 1.20 ×10^(4)M^(3)s^(-1).Calculate the i) half-life of the reaction and ii) the time required for the concentration of HI to reduce to 0.10M