
Concept explainers
Interpretation:
The mass of
Concept introduction:
pH is the measure of acidity of a solution, which depends on the concentration of hydronium ions and the temperature of the solution.
The formula to calculate
The relationship between
The value of
The ionization of the weak base takes place as:
The number of moles
Here,
Molarity
Here,

Answer to Problem 161AP
Solution:
Explanation of Solution
Given information:
The pH of methylamine
Use equation (1) to calculate the concentration of hydronium ions in the solution with the use of pH as:
Now, use equation (2) to calculate the value of
Refer to table
The reaction of methylamine is depicted as:
Prepare an equilibrium table and represent each of the species in terms of
Now, substitute these concentrations in equation (3) as follows:
Now, substitute the value of
Thus,
The molarity of methylamine is
Here,
The molar mass of
Here,
The mass for the methylamine solution in water is
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Chapter 16 Solutions
Chemistry
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