Preparation of a Buffered Solution Kit Manufacturer,Supplier and Exporter In Ambala
Product Code : EL-ECM-11258
Prepare buffer solutions of assigned pH values and determine the buffer capacity of these solutions.
Provides the following Chemistry experiences; design a procedure to collect data, analyze data, prepare solutions, and use volumetric glassware.
This experiment provides a thorough experience in both buffer preparation and buffer capacity.
Teach this laboratory experience using either the guided activity or inquiry activity.
In the guided activity, students calculate the amounts of acid and base they need to prepare their stock acid and base solutions.
Then using the Henderson-Hasselbalch equation they determine the volumes of stock acid and base solutions needed to prepare their buffers.
Students then test the buffering capacity of these buffer solutions.
In the inquiry activity, students choose the best conjugate acid-base pair to attain a buffer solution of desired pH and determine the concentration of the conjugate acid-base solutions needed to attain the required buffer capacity of the final solution.
In the assessment, students choose the best conjugate acid-base pair for the assigned pH, calculate the pH of the concentrated acid solution, and then calculate the required mass of conjugate base to mix with the acid to achieve the assigned pH value.
These questions require setting up equilibrium equations and using the Henderson-Hasselbalch equation.
Materials are sufficient for 30 students in teams of 3
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