Question

Compound X absorbs photons with a wavelength of 179.3 nm. What is the increase in energy of a 0.115 M solution of compound X in which a mole of photons are absorbed

Answer 1

Step-by-step explanation:

one mole of photon will contain

6.02 x 10²³ no of photons

energy of one photon = h x f

= h c / λ

h is plank's constant , c is velocity of light and λ is wavelength

= 6.6 x 10⁻³⁴ x 3 x 10⁸ / 179.3 x 10⁻⁹

= .11 x 10⁻¹⁷ J

energy of one mole of photon

= 6.02 x 10²³ x .11 x 10⁻¹⁷

= .6622 x 10⁶ J