Activity Detail
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Vernier - Microscale Acid-Base Titration
 


Activity Overview

In this activity, students' will use a pH sensor to determine the change in pH during a titration of a known concentration of NaOH and unknown concentration of HCl. Students' will determine the concentration of unknown HCl.

Before the Activity

Print the attached .pdf file for each student. You will find one file for DataMate and one file for EasyData.

During the Activity

Distribute the pages to your class.

Follow the Activity procedures:
  • Prepare and calibrate the pH sensor
  • Use a micro-beaker, add HCl of unknown concentration, indicator, and distilled water to it
  • Titrate 0.1M NaOH drop wise and determine volume of NaOH to reach Equivalence point, the point where there is a sharp rise in pH
  • Plot a graph of pH versus volume
  • Use the formula and calculate the concentration of HCl solution

    		After the Activity

    		Students' will complete Data Collection and Analysis Sheet.

    Review student results
  • As a class, discuss questions that appeared to be more challenging
  • Re-teach concepts as necessary

    		Other Downloads




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    Subject Area:
    Science : Chemistry : Acids, Bases, and Salts

    Author:
    Vernier Software & Technology

    Level:
    9-12

    Activity Time:
    60 Minutes

    Device:
    TI-83 Plus Family, TI-84 Plus Family

    Apps:
    DataMate, EasyData™

    Software:
    TI Connect™

    Accessories:
    CBL™/CBL 2™, TI Connectivity Cable, TI-GRAPH LINK™ Cable, Vernier EasyLink®, Unit-to-Unit link cables, Vernier LabPro®, Sensor - pH

    Other:
    This is Experiment 36 from the Vernier Book: Chemistry with Calculators

    The following materials are required for this activity:

  • Wash bottle
  • Distilled water
  • Toothpick
  • 0.10 M NaOH solution in dropper bottle
  • HCl solution in dropper bottle
  • Ring stand
  • Utility clamp
  • Phenolphthalein indicator
  • Micro-beaker (top half of a storage bottle for the pH sensor


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