Chapter 6, Problem 6.107PAE

Interpretation Introduction

Interpretation:

The photochemical reaction that initiates the production of smog involves the decomposition of NO molecules, and the energy needed to break the N-O bond is $\text{1}\text{.04}\times {\text{10}}^{-18}\text{J}$.

(a) The longest wavelength of light that could break the bond should be calculated.

(b) Number of photons needed to decompose 0.32 mg of NO should be calculated.

Concept introduction:

A chemical reaction which is originated when the molecules of substance absorb energy of light is known as the photochemical reaction. Due to this reaction, molecules reach to the transient excited state, subsequently their chemical and physical properties changes from the original molecule. At this moment, molecules incline to create a new structure, or combine with other molecules by transfer of atoms, protons or electrons. Therefore,a prolonged chemical chain reaction takes place.