Classify each titration curve as representing a strong acid titrated with a strong base, a…
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Question ” Classify each titration curve as representing a strong acid titrated with a strong base, a…”
Answer
This problem is based upon titration curves for acids and bases.
The Titration curve plots the pH of an analyte solution and the volume of added detergent. When an acid or base analyte is titrated against a titrant (base, acid), at a point called the Equivalence Point, the number moles of hydrogen ions equals the number moles of hydroxide ions.
Hydroxide ions and hydrogen ions react to create water. This neutral substance has a pH of seven.
If the strong acid-strongbase titration is performed when the solutions are equal in strength, the analyte solution at the equivalence points contains no hydrogen or hydroxideions so the pH remains constant at 7.
The pH at the equivalence level for weak analytes or titrants is however not 7. These cases are where the pH at the equivalence level is not equal to 7. The solution is now either acidic or basic, but not neutral.
The Equivalence point refers to the point at which the titration curve shows an inflection point.
Polyprotic acids release more hydrogen ions than each other molecule, so the titration curve of a strong base-titrant has an inflection point, or equivalence, point for each hydrogen released.
(1)
Below is the titration curve.
![Hd
mL of titrant](https://drive.google.com/uc?id=1cRqpHnzGkTVuEPZM1U_u4PlFb6q_TPxI&export=download/ -Classify-each-titration-curve-as-representing-a-strong-acid-titrated-with-a-strong-base,-a.png?x-oss-process=image/resize,w_560/format,webp)
![](https://drive.google.com/uc?id=1CsigGbxfzjfzDzr37RaLf5aoETiCSEQF&export=download/ -Classify-each-titration-curve-as-representing-a-strong-acid-titrated-with-a-strong-base,-a.png?x-oss-process=image/resize,w_560/format,webp)
also, titration begins at low pH and ends with high pH. This indicates that titration takes place between strong acidity and strong base.
(2)
Below is the titration curve.
![Hd
mL of titrant](https://drive.google.com/uc?id=1bb7lU1dqw4rIxvTSC2QDSMID7jXk8CtR&export=download/ -Classify-each-titration-curve-as-representing-a-strong-acid-titrated-with-a-strong-base,-a.png?x-oss-process=image/resize,w_560/format,webp)
and the Equivalence Point is at . The titration curve starts at high pH, and ends at low pH.
This indicates that the titration range is between strong acid and strong base.
(3)
Below is the titration curve.
![pH
mL of titrant](https://drive.google.com/uc?id=16d5Vc9Hxrb8XqIfAssOGc0K5s5eNF_Oe&export=download/ -Classify-each-titration-curve-as-representing-a-strong-acid-titrated-with-a-strong-base,-a.png?x-oss-process=image/resize,w_560/format,webp)
The pH equivalence point is higher than 7. Also, the curve starts at low pH and ends high pH. This indicates that there has been a titration of weak acid and strong bases. Analytes are base if pH is greater than 7.
(4)
Below is the titration curve.
![Hd
mL of titrant](https://drive.google.com/uc?id=16ec6CTMQ-Xy1rSkA1g895LOOYz6xMm-C&export=download/ -Classify-each-titration-curve-as-representing-a-strong-acid-titrated-with-a-strong-base,-a.png?x-oss-process=image/resize,w_560/format,webp)
The pH equivalence point is lower than 7. Also, the curve starts at high pH and ends with low pH. This indicates that there has been a titration of weak base and strong acids. Analyte is acid if pH is below 7.
(5)
Below is the titration curve.
![pH
mL of titrant](https://drive.google.com/uc?id=1LVpikfoEOYV9f-WHGWQyXiJM6fCJqNDs&export=download/ -Classify-each-titration-curve-as-representing-a-strong-acid-titrated-with-a-strong-base,-a.png?x-oss-process=image/resize,w_560/format,webp)
The curve can be viewed from both low and high pH. Because there are two equivalent points, the starting point for each curve is low pH, it must be polyprotic acid (weak).
This indicates that polyprotic acid has been titrated with a strong base.
Ans Part 1
Titration curve for strong acid or strong base titration.
Part 2
Titration curve refers to strong acid and strong base titration.
Part 3
Titration curve refers to weak acid and strong bases titration.
Part 4
Titration curve refers to weak base and strong acids titration.
Part 5
This is the titration curve for strong base and polyprotic acid titration.
Conclusion
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