What is the wavelength of a photon needed to dissociate an S₂ molecule whose bond energy is 226 kJ/mol (h = 6.63 × 10^-34J s; c = 3.0 × 10⁸m/s; and Avogadro's number = 6.022 × 10²³molecules/mole)?

Question

Quizplus · Accepted Answer

To find the wavelength, first convert the bond energy from kJ/mol to J/photon: (226,000 J/mol) / (6.022 × 10^23 molecules/mol) = 3.75 × 10^-19 J/photon. Then use the equation E = hc/λ to find the wavelength: λ = hc/E = (6.63 × 10^-34 J s)(3.0 × 10^8 m/s) / (3.75 × 10^-19 J) = 530 nm.

What Is the Wavelength of a Photon Needed to Dissociate