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Dissociating the Hydrogen Molecule The energy required to
Chapter 30, Problem 25P(choose chapter or problem)
Problem 25P
Dissociating the Hydrogen Molecule The energy required to separate a hydrogen molecule into its individual atoms is 104.2 kcal per mole of H2. (a) If the dissociation energy for a single H2 molecule is provided by one photon, determine its frequency and wavelength. (b) In what region of the electromagnetic spectrum does the photon found in part (a) lie? (Refer to the spectrum shown in Figure 25–8.)
Questions & Answers
QUESTION:
Problem 25P
Dissociating the Hydrogen Molecule The energy required to separate a hydrogen molecule into its individual atoms is 104.2 kcal per mole of H2. (a) If the dissociation energy for a single H2 molecule is provided by one photon, determine its frequency and wavelength. (b) In what region of the electromagnetic spectrum does the photon found in part (a) lie? (Refer to the spectrum shown in Figure 25–8.)
ANSWER:
Step 1 of 3
Here, we have to find the frequency and wavelength of the photon which will separate the hydrogen molecule into its constituent atoms.
The energy required per mole is, 104.2 kCal.
For 1 molecule the required energy will be,
1 cal = 4184 J