
Concept explainers
Interpretation:
The longest wavelength required to dissociate the
Concept introduction:
The standard enthalpy of a reaction is the difference between the sum of standard enthalpy of products and the sum of the standardenthalpy of reactants.
The wavelength is represented by the following expression:
Here, h is the Planck’s constant,

Answer to Problem 69AP
Solution:
Explanation of Solution
Given information: The given reaction is as follows:
The reaction is as follows:
The standard enthalpy of a reaction is calculated as follows:
For the given reaction, the enthalpy change is given by the following expression:
Substitute the values of
Thus, the standard enthalpy of reaction is
The energy change is calculated as follows:
The ideal gas equation is as follows:
Here,
Substitute the value of
Substitute the values in the above equation:
Therefore, the amount of energy required to dissociate
The amount of energy required to dissociate
Thus, amount of energy required to dissociate
The longest wavelength is calculated as follows:
Here, h is the Planck’s constant,
Substitute the values of speed of light, energy, and Planck’s constant in the above equation:
The longest wavelength required to break
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Chapter 21 Solutions
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