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Tag Archives: calibration curve
Limitation to Beer’s Law
Beer’s law suggests that a calibration curve is a straight line with a y-intercept of zero and a slope of εb. In many cases a calibration curve deviates from this ideal behavior, as shown here. One limitation to Beer’s law is … Continue reading
Two Ways to Prepare a Standard Addition
The illustration below shows one method for making a standard addition. The volumetric flask on the left contains a portion of the sample, Vo, and the volumetric flask on the right contains an identical portion of the sample and a … Continue reading
External Standards Calibration Curve
Shown at the top is a reagent blank (far left) and a set of five external standards for Cu2+ with concentrations increasing from left to right. Shown below the external standards is the resulting normal calibration curve. The absorbance of … Continue reading
Standard Addition Calibration Curve
Shown at the top is a set of six standard additions for the determination of Mn2+. The flask on the left is a 25.00-mL sample diluted to 50.00 mL. The remaining flasks contain 25.00 mL of sample and, from left … Continue reading