
(a)
Interpretation:
The significance of the points at which the two curves meet in the given graph is to be determined. Also, the values of fraction and the pH from the given graph needs to be determined.
Concept introduction:
The curve of a titration graph is used to indicate the change in the pH of the solution as the change in volume of the mixture takes place due to the addition of the titrant. The volume of the chemical is an independent variable in the graph while the pH of the solution is a dependent variable as its value changes on the addition of more volume of the titrant.
(b)
Interpretation:
The curve for the carbonic acid is to be determined and also the number of intersection points at the corresponding pH values is to be determined.
Concept introduction:
The curve of a titration graph is used to indicate the change in the pH of the solution as the change in volume of the mixture takes place due to the addition of the titrant. The volume of the chemical is an independent variable in the graph while the pH of the solution is a dependent variable as its value changes on the addition of more volume of the titrant.
(c)
Interpretation:
The curve for the phosphoric acid is to be determined and also the number of intersection points at the corresponding pH values is also to be determined.
Concept introduction:
The curve of a titration graph is used to indicate the change in the pH of the solution as the change in volume of the mixture takes place due to the addition of the titrant. The volume of the chemical is an independent variable in the graph while the pH of the solution is a dependent variable as its value changes on the addition of more volume of the titrant.

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Chapter 17 Solutions
General Chemistry: Principles and Modern Applications (11th Edition)
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