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The aim is to examine the acid-base properties of aqueous salt solutions and assess students' understanding.

Exploring Acid-Base Chemistry of Aqueous Salt Solutions

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The aim is to examine the acid-base properties of aqueous salt solutions and assess students' understanding.
Conducted a laboratory experiment with students preparing seven aqueous salt solutions.
Measured pH values of each salt solution to analyze their acid-base properties.
Determined hydrolysis constants of cations and anions and converted them to pK values.
Compared measured pH values with theoretical values and known pK values.
Students displayed varying abilities in interpreting pH values based on hydrolysis results.
Average measured pH values often deviated from calculated theoretical pH.
Significant differences were found in data quality across different laboratory sections.

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Laboratory experiment explores pH of aqueous salt solutions, indicating learning obstacles in chemistry education.

Bazzi et al. (2023) studied this question.

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