
Concept explainers
(a)
Interpretation:
The stronger base between Cl- and H2O should be determined.
Concept Introduction :
For a strong acid, equilibrium lies far to the right. That means almost all the acid molecules are dissociated at the equilibrium and solution contains the free ions. For a weak acid, the equilibrium lies far to the left. That means most of the acid molecules are still present as acid molecules and dissociated to a very small extent.
(b)
Interpretation:
The stronger base between H2O and NO2-should be determined.
Concept Introduction :
For a strong acid, equilibrium lies far to the right. That means almost all the acid molecules are dissociated at the equilibrium and solution contains the free ions. For a weak acid, the equilibrium lies far to the left. That means most of the acid molecules are still present as acid molecules and dissociated to a very small extent.
(c)
Interpretation:
The stronger base between CN-and OC6H5- should be determined.
Concept Introduction :
For a strong acid, equilibrium lies far to the right. That means almost all the acid molecules are dissociated at the equilibrium and solution contains the free ions. For a weak acid, the equilibrium lies far to the left. That means most of the acid molecules are still present as acid molecules and dissociated to a very small extent.

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Chapter 7 Solutions
Chemical Principles
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