A standard solution was put through appropriate dilutions to give the concentrations of iron shown in the

Question:

A standard solution was put through appropriate dilutions to give the concentrations of iron shown in the accompanying table. The iron(II)-1,10,phenanthroline complex was then formed in 25.0-mL aliquots of these solutions, following which each was diluted to 50.0 mL (see Figure 24-7). The absorbances in the table (1.00-cm cells) were recorded at 510 nm.

Figure 24-7

(a) Plot a calibration curve from these data.
(b) Use the method of least squares to find an equation relating absorbance and the concentration of iron(II).
(c) Calculate the standard deviation of the slope and intercept.

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