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Chapter 11: Q71P (page 263)

Titrating nicotine with strong acid.Prepare a spreadsheet to reproduce the lower curve in Figure 11-4.

Short Answer

Expert verified

The spreadsheet developed is shown below

Step by step solution

01

Information given

Titration of 10.0 mL of 0.100 M nicotine (pKb1 = 6.15, pKb2 = 10.85) with 0.100 M HCl.

As nicotine is a weak base the reaction here will be in between weak base with strong acid.

02

Equation need to be used to develop spreadsheet

Fromtable 11.5 the equation for the fraction of titration of weak base with strong acid. is as follows

ϕ=CaVaCbVb=αBH++2αBH2++H+-OH-Cb1-H+-OH-Ca

Other formulas need to be used

H+=10-pHOH-=KwH+αBH2+=H+2H+2+H+K1+K1K2αBH+=H+K1H+2+H+K1+K1K2

03

Spreadsheet

Spreadsheet developed

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