Concept explainers
When the conjugate acid of aniline, C6H5NH3+, reacts with the acetate ion, the following reaction takes place:
If Kafor C6H5NH3+ is
Interpretation:
The K of the given reaction is to be calculated.
Concept introduction:
The relationship between the concentration of products and reactants at equilibrium for a general reaction:
Where A, B, C, and D represents chemical species and a, b, c, and d are the coefficients for balanced reaction.
The equilibrium expression, Kc for reversible reaction is determined by multiplying the concentrations of products together and divided by the concentrations of the reactants. Every concentration term is raised to the power that is equal to the coefficient in the balanced reaction. So, the expression is:
pH scale is a type of measurement of H+ ion concentration in the solution. It is taken as a negative log of H+ ion concentration as:
For the equilibrium conditions:
Where, ka is acid dissociation constant, kb is base dissociation constant and kw is ionic product of water whose value is fixed as 10-14.
Answer to Problem 28QAP
The required
Explanation of Solution
Given Information:
The conjugate acid of aniline
The reaction is:
The conjugate acid of aniline is a weak acid which dissociates as:
The equilibrium constant expression will be:
Further acetic acid is dissociated as:
Hence, we have:
The equilibrium constant expression will be:
Further when the reactions are added:
The expression is:
The expression can be rearranged as:
Putting the values we get:
The required
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Chapter 22 Solutions
Chemistry: Principles and Reactions
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