Concept explainers
What are the concentrations of
Interpretation:
The concentrations of
Concept introduction:
Salt is a strong electrolyte that dissociates completely when added to water.
When a salt contains an anion that comes from a strong acid, the anion does not recombine with water to produce the acid. It exists as a free ion in the solution and does not affect the pH of the solution. The cation, if it comes from a strong base, does not recombine and is present in the solution as a free ion without having any effect on the pH of the solution.
For the diprotic acid, the first ionization takes place as:
The second ionization of the diprotic acid takes place as:
Percent ionization is the percentage of acid that gets dissociated upon addition in water. It depends on the hydronium ion concentration.
Here,
Answer to Problem 86QP
Solution:
Explanation of Solution
Given information:
The concentration of potassium hydrogen sulphate
The salt
Also, the anion
The
Since, there is complete dissociation of the salt to form ions,
Prepare an equilibrium table and represent each of the species in terms of
Now, substitute these concentrations in equation (2) as:
Since the value of
Thus,
Calculate the percent dissociation from equation (3) as:
Since, the percent dissociation is more than
Since, concentration cannot be negative so,
Thus,
The concentrations of
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Chapter 16 Solutions
Chemistry
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