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CH32 – Titration Curves

line_graph

your graph will NOT look like this

Dates

  • P1 – Wednesday, April 5th
  • P3 – Thursday, April 6th
  • P5 – Tuesday, April 4th

Class Activity – Overview

  • definition of titration curve
  • determine the pH at various points of the titration
  • plot graph: x = volume base added (mL), y = pH of solution
  • show all work on separate sheets
  • for common calculations, may show one type and then summarize
  • OK to use spreadsheet but make sure results written on paper

Class Activity – Details

  • 0.0783-M NaOH is the titrant
  • 0.0844-M HCl is being titrated
  • Total Volume of acid at the start = 20.00 mL
  • determine the pH of the starting acid solution
  • plot graph: x = volume base added (mL), y = pH of solution

Trials – Volume of Base added

  • [1-5] = 5.00 mL
  • [6-10] = 0.25 mL
  • [11-15] = 0.10 mL
  • [16-20] = 0.25 mL
  • [21-25] = 5.00 mL

Graph Questions (to answer neatly and completely)

  • what does the shape indicate?
  • how do I know whne the equivalence point is?
  • how does volume impact pH as the titration continues?
  • what factors impact the shape of the graph?
  • 15.4 <it’s a thing>

Homework

  • finish all calculations and graph results
  • all students should have own copy of supporting work and table
  • be ready to hand in paper copy of work
  • one graph per group

This is cool

Acid-Base Solutions

Click to Run

Information

This entry was posted on April 3, 2017 by in CH1617 and tagged , , .
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