When aniline, C6H5NH2
Interpretation:
The pH of 0.100 M solution of
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 26QAP
The required
Explanation of Solution
Given Information:
The aniline
For, acetic acid
The conjugate acid of aniline is a weak acid which dissociates as:
Let’s discuss the main reaction in one direction and creating ICE table as:
Hence, we have:
The equilibrium constant expression will be:
Putting the standard value of Ka :
Now, the equilibrium expression is:
Further, pH is calculated as:
Further the pH of acetic acid is calculated by its dissociation as:
Hence, we have:
The equilibrium constant expression will be:
Putting the standard value of Ka the equilibrium expression is:
Further, pH is calculated as:
The required
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Chapter 22 Solutions
Chemistry: Principles and Reactions
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