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A student used the following method to titrate an acetic acid solution of unknown concentration with a standardised solution of dilute sodium hydroxide - HSC - SSCE Chemistry - Question 5 - 2021 - Paper 1
Question 5
A student used the following method to titrate an acetic acid solution of unknown concentration with a standardised solution of dilute sodium hydroxide. • Rinse bur... show full transcript
Worked Solution & Example Answer:A student used the following method to titrate an acetic acid solution of unknown concentration with a standardised solution of dilute sodium hydroxide - HSC - SSCE Chemistry - Question 5 - 2021 - Paper 1
Step 1
Compared to the actual concentration of the acetic acid, the calculated concentration will be
Answer
The method used in the titration process can introduce procedural errors that often lead to discrepancies between the actual concentration of the acetic acid and the calculated value.
When the titration is performed, if the endpoint of the titration is overshot, it implies that more sodium hydroxide solution was used than what was required to completely neutralize the acetic acid. As a result, the calculated concentration of the acetic acid will appear to be higher than its actual concentration.
Therefore, the likely outcome, based on the potential for overshooting the titration endpoint, suggests that the calculated concentration will be higher. Thus, the correct answer is B. higher.