Titration Analysis of Sodium Hydroxide Content

  • Product Code: 126020
Acid-base titration to determine NaOH concentration in aqueous solution using standardized HCl and phenolphthalein indicator.
฿2,990.00

label Sample Names

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assignment Instructions

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description Sample Requirement

Aqueous NaOH solution 100 mL

insert_drive_file Report of Previously Tested Sample

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timeline Service Steps

Step Procedure Expected Result
1
Pipette 25.0...
check_circle_outline Clear solution ready for titration.
2
Add 3...
check_circle_outline Pink color appears when NaOH present.
3
Fill burette...
check_circle_outline Sharp color change at endpoint.
4
Repeat steps...
check_circle_outline Results within 0.2 mL; provide average NaOH concentration.

Titration Analysis of Sodium Hydroxide Content

Titration Analysis of Sodium Hydroxide Content

Titration Procedure

  1. Prepare the Sample:

    • Pipette a known volume of the NaOH solution (typically 10-50 mL) into a clean beaker or flask.
    • Dilute with distilled water if necessary to ensure the titrant will have a measurable effect.

  2. Add Indicator (if using a visual endpoint):

    • Add 2-3 drops of phenolphthalein to the NaOH solution. The solution will appear pink due to the basic pH.

  3. Fill the Burette with Standard HCl Solution:

    • Carefully fill the burette with the standard HCl solution, making sure to remove any air bubbles from the nozzle.
    • Record the initial volume of HCl in the burette.

  4. Titrate the NaOH Solution:

    • Gradually add the HCl from the burette to the NaOH solution while stirring continuously.
    • If using phenolphthalein, the endpoint is reached when the pink color disappears, indicating neutralization (pH ~7).
    • If using a pH meter, monitor the pH and stop the titration when you reach a pH of 7.
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Service Steps
Step Procedure Expected Result
1 Pipette 25.0... Clear solution ready for titration.
2 Add 3... Pink color appears when NaOH present.
3 Fill burette... Sharp color change at endpoint.
4 Repeat steps... Results within 0.2 mL; provide average NaOH concentration.