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A titration was performed using two solutions of equal concentration, producing the following titration curve - HSC - SSCE Chemistry - Question 9 - 2023 - Paper 1
Question 9
A titration was performed using two solutions of equal concentration, producing the following titration curve. Which combination of solutions does the titration cur... show full transcript
Worked Solution & Example Answer:A titration was performed using two solutions of equal concentration, producing the following titration curve - HSC - SSCE Chemistry - Question 9 - 2023 - Paper 1
Step 1
Which combination of solutions does the titration curve represent?
Answer
To determine the solution combination represented by the titration curve, we analyze the graph provided.
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Examine the Shape of the Curve: The initial pH is low, indicating that we start with an acidic solution. As titrant is added, the pH rises significantly around a specific volume, suggesting a sharp change in acidity. This behavior is characteristic of a weak acid being neutralized by a strong base.
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Identify the Acid and Base: In titrations involving a strong base and a weak acid, the weak acid will have a gradual increase in pH before a rapid rise at the equivalence point. The steep slope in the curve indicates that the equivalence point is reached, confirming the presence of a strong base.
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Conclusion: Given that the curve shows a weak acid being titrated with a strong base, we conclude that the correct option is:
C. Addition of a strong acid to a weak base.