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Chapter 19: Q16P (page 487)

The indicator xylenol orange (Table 12-3) forms a complex with Zr(IV)in HCIsolution. Prepare a Job plot from the data in the table and suggest the stoichiometry of the complex (xylenol orange)Zrzx.

Short Answer

Expert verified

The stoichiometry of the complex is(xylenolorange)2Zr3

Step by step solution

01

Define stoichiometry.

It is defined as the study of quantitative relations between the amount of reactants and/or products is calledstoichiometry.

02

Draw the graph.

Peak obtained from the graph= 0.4.

03

Calculate mole fraction.

We know that peak is 0.4, so mole fraction,

0.4=22+3=xylenolorangexylenolorange+Zr(IV)

Therefore, The stoichiometry is,

(xylenolorange)2Zr3

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Most popular questions from this chapter

Figure 19-6 is a Scatchard plot for the addition of 0-20nM antigen X to a fixed concentration of antibodyP=(Po=10nM)Prepare a Scatchard plot from the data in the table and find K for the reactionP+X⇌PX. The table gives measured concentrations of unbound X and the complex PX. It is recommended that the fraction of saturation should span the range ,-0.2-0.8. What is the range of the fraction of saturation for the data?

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The spreadsheet uses Solver to vary K and ∆Ein cells B10:B11 to minimize the sum of squares of differences between observed and calculatedin solutions with different amounts of P. Cell E16 computes [PX] from Equation 19-21, which is Equation A on line 6 of the spreadsheet. Cells F16 and G16 find [X] and [P] from mass balances. Cell H16 computes ΔAcalc=ΔE[PX]which is Equation B on line 7.

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Your assignment is to write formulas in columns E through J of the spreadsheet to reproduce what is shown and to find values in cells E17:J20. Then use Solver to find K andin cells B10:B11 to minimizeΣAoths−Acalc2in cell I21.
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