Interpretation: The classification of the given solution in terms of concentration and strength needs to be done.
Concept Introduction: For any acid dissociation reaction, the acid dissociation constant can be calculated as follows:
Here, the concentration of dissociated species can be calculated using the ICE table.
Explanation of Solution
The given solution is a 15 M solution of an acid with an acid dissociation constant
The strength of the solution can be determined by calculating the degree of dissociation.
The acid dissociation reaction can be represented as follows:
Here, the concentration of acid
The ICE table can be represented as follows:
Now, the expression for the acid dissociation constant will be:
Substitute the values,
Here, the value of C is the initial concentration of HA that is 15 M, and the value of
Now, substitute all the values in the expression for the acid dissociation constant.
Or,
Solve the above quadratic equation as follows:
The value of x cannot be negative thus, the correct value of x or
The given solution is a concentrated weak acid. The solution is concentrated because the molarity of the solution is high and it is a weak acid because it is not completely dissociated into hydronium ion and conjugate base.
Chapter 19 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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