
Concept explainers
(a)
Interpretation : The enthalpy of the formation of
Concept Introduction :
The enthalpy is defined as the product of the pressure and volume added up with the system internal energy. It is the property of
(a)

Answer to Problem 108AE
The enthalpy of formation of
Explanation of Solution
Nitrogen trifloride is colorless, inorganic thermally stable compound. It is non- flammable in nature. The stability is due to comparable size of nitrogen and fluoride. While the nitrogen iodide is an explosive compound due to the difference in the size of the atoms.
Consider the following reaction
Consider the enthalpy of formation of
Subtitling
Thus, the enthalpy of formation of
(b)
Interpretation : The molecular geometries of the species are determined.
Concept Introduction :
The molecular geometry is the three dimensional shape of the atom that contains the molecule. It consists of the general shape which contains bond lengths, bond angles, transition angles and other parameters determining the position of atoms.
(b)

Answer to Problem 108AE
It will have 4 bond pairs and the geometry will become tetrahedral with
Explanation of Solution
According to the vesper theory the molecular geometry are predicted as follows
Total valance shell electrons of the
Thus it will have 2 lone pairs and 2 bond pairs and the geometry will become V-shaped geometry with
It is represented as follows:
Total valance shell electrons of the
Thus it will have 4 bond pairs and the geometry will become tetrahedral with
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Chapter 18 Solutions
Chemical Principles
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