A student prepares a calibration curve from a standard solution that is believed

Question

A student prepares a calibration curve from a standard solution that is believed to be composed of a single dye. However, the student does not realize that the color of the standard solution is actually composed of two different species of food dye, both of which absorb at the wavelength chosen for the curve.What will happen to the student's calibration curve?

a) The data will be skewed high; the calibration curve has positive error

b) the data will be skewed low; the calibration curve has negative error

c) there will be no effect on the data; the calibration curve remains valid

d) the data will be skewed high but, since the error is consistent for all points, the calibration curve remains valid

Explanation / Answer

Note that if we use the SAME wavelength, then both species will absorb the spectrum

therefore, the data will be skweed higher than normal, since it will give higher values of absorption value

Then, choose A

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