Concept explainers
Specify which compound in each of the following pairs of ionic compounds should have the higher lattice energy: (a) KCl or MgO, (b) LiF or LiBr, (c) Mg3N2 or NaCl, (d) AlN or CaO, (e) NaF or CsF, (f) MgCl2 or MgF2. Explain your choice.
(a)
Interpretation:
The highest lattice energy among the given pair of ionic compounds has to be identified.
Concept Introduction:
Lattice energy:
The amount of energy that is necessary for the conversion of one mole of ionic solid to its constituent ions in gaseous phase is called Lattice energy.
Hess’s law:
The enthalpy change for given set of reactants to the given set of products is the same, whether the process takes place in single or sequence of steps. This is called as Hess’s law.
Enthalpy is generally calculated from the standard enthalpy of formation.
With the thermodynamic values from Hess’s law, the lattice energy of ionic compound can be determined.
Answer to Problem 10.81QP
Explanation of Solution
(b)
Interpretation:
The highest lattice energy among the given pair of ionic compounds has to be identified.
Concept Introduction:
Lattice energy:
The amount of energy that is necessary for the conversion of one mole of ionic solid to its constituent ions in gaseous phase is called Lattice energy.
Hess’s law:
The enthalpy change for given set of reactants to the given set of products is the same, whether the process takes place in single or sequence of steps. This is called as Hess’s law.
Enthalpy is generally calculated from the standard enthalpy of formation.
With the thermodynamic values from Hess’s law, the lattice energy of ionic compound can be determined.
Answer to Problem 10.81QP
Explanation of Solution
(c)
Interpretation:
The highest lattice energy among the given pair of ionic compounds has to be identified.
Concept Introduction:
Lattice energy:
The amount of energy that is necessary for the conversion of one mole of ionic solid to its constituent ions in gaseous phase is called Lattice energy.
Hess’s law:
The enthalpy change for given set of reactants to the given set of products is the same, whether the process takes place in single or sequence of steps. This is called as Hess’s law.
Enthalpy is generally calculated from the standard enthalpy of formation.
With the thermodynamic values from Hess’s law, the lattice energy of ionic compound can be determined.
Answer to Problem 10.81QP
Explanation of Solution
(d)
Interpretation:
The highest lattice energy among the given pair of ionic compounds has to be identified.
Concept Introduction:
Lattice energy:
The amount of energy that is necessary for the conversion of one mole of ionic solid to its constituent ions in gaseous phase is called Lattice energy.
Hess’s law:
The enthalpy change for given set of reactants to the given set of products is the same, whether the process takes place in single or sequence of steps. This is called as Hess’s law.
Enthalpy is generally calculated from the standard enthalpy of formation.
With the thermodynamic values from Hess’s law, the lattice energy of ionic compound can be determined.
Answer to Problem 10.81QP
Explanation of Solution
(e)
Interpretation:
The highest lattice energy among the given pair of ionic compounds has to be identified.
Concept Introduction:
Lattice energy:
The amount of energy that is necessary for the conversion of one mole of ionic solid to its constituent ions in gaseous phase is called Lattice energy.
Hess’s law:
The enthalpy change for given set of reactants to the given set of products is the same, whether the process takes place in single or sequence of steps. This is called as Hess’s law.
Enthalpy is generally calculated from the standard enthalpy of formation.
With the thermodynamic values from Hess’s law, the lattice energy of ionic compound can be determined.
Answer to Problem 10.81QP
Explanation of Solution
(f)
Interpretation:
The highest lattice energy among the given pair of ionic compounds has to be identified.
Concept Introduction:
Lattice energy:
The amount of energy that is necessary for the conversion of one mole of ionic solid to its constituent ions in gaseous phase is called Lattice energy.
Hess’s law:
The enthalpy change for given set of reactants to the given set of products is the same, whether the process takes place in single or sequence of steps. This is called as Hess’s law.
Enthalpy is generally calculated from the standard enthalpy of formation.
With the thermodynamic values from Hess’s law, the lattice energy of ionic compound can be determined.
Answer to Problem 10.81QP
Explanation of Solution
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Chapter 10 Solutions
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