Select every statement that is true about the titration of an acid with a strong

ID: 501442 • Letter: S

Question

Select every statement that is true about the titration of an acid with a strong base.
* A graph of pH versus moles of base added will yield a sigmoidal (S-shaped) curve only if the acid being titrated is weak.
* In the initial flat region of the graph, the pH stays relatively constant because very few hydrogen ions are being lost to the added base.
* In the steep region of the graph, the hydrogen ion concentration is changing by orders of magnitude, hence the dramatic changes in pH.
* In the second flat region of the graph, the pH is staying relatively constant because there is very little change to the now miniscule hydrogen ion concentration. Select every statement that is true about the titration of an acid with a strong base.
* A graph of pH versus moles of base added will yield a sigmoidal (S-shaped) curve only if the acid being titrated is weak.
* In the initial flat region of the graph, the pH stays relatively constant because very few hydrogen ions are being lost to the added base.
* In the steep region of the graph, the hydrogen ion concentration is changing by orders of magnitude, hence the dramatic changes in pH.
* In the second flat region of the graph, the pH is staying relatively constant because there is very little change to the now miniscule hydrogen ion concentration. Select every statement that is true about the titration of an acid with a strong base.
* A graph of pH versus moles of base added will yield a sigmoidal (S-shaped) curve only if the acid being titrated is weak.
* In the initial flat region of the graph, the pH stays relatively constant because very few hydrogen ions are being lost to the added base.
* In the steep region of the graph, the hydrogen ion concentration is changing by orders of magnitude, hence the dramatic changes in pH.
* In the second flat region of the graph, the pH is staying relatively constant because there is very little change to the now miniscule hydrogen ion concentration.

Explanation / Answer

Second and third statements are true about the titration of an acid with strong base.

First statement is false because sigmoidal curve is obtained for strong acid too.

For fourth statement in the second flat region there is no hydrogen ion. There is hydroxide ion.

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Select every statement that is true about the titration of an acid with a strong

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