Question

Post-Laboratory Assignment 1. Which end of the spectrum shows higher energy transitions? (Circle one) blue end red end 2. As wavelength increases, energy increases decreases 3. As frequency increases, energy increases decreases 4. The intense Lyman-a hydrogen solar emission line at 121.58 nm is strongly absorbed by , in the stratosphere. This results in O dissociation and the ultimate formation of opone, O. to form the coone layer. a. Calculate the energy of one photon with a wavelength of 121.58 nm. b. Calculate the energy for a mole of photons of wavelength 121.58 nm. (Remember that I mole = 6.022 x 10") LLLLLOOOOOOOOO0000000 C. The Lyman-a hydrogen solar emission line at 121.58 nm corresponds to an electron dropping from a higher energy level down to n-1. Use the Rydberg equation to iden tify the transition to = 1 POSTLAB. 175

Answer 1

energy is inversely proportional to wavelength, while directly proportional to the frequency.

1. blue end of spectrum shows higher energy transitions because of shorter wavelengths.
2. as the wavelength increases, energy decreases. [due to inverse relation between them]
3. as the frequency increases, energy increases. [due to direct relation between them.]