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Why do value of absorbance have no units?
Because it's a relative value.
Why are the absorbance values obtained from the conversion chart rather than the absorbance scale on the spectronic 20?
because that chart gives a more accurate value than the absorbance scale on the specthometor
What is e-value of a optical brightening agent?
e-value of an optical brightening agent is the absorbance value obtained (in the UV region), when the absorbance of 1% solution is measured using a cuvette of 1 cm path length. T.J.R.PILLAI
What is the absorbance value for tartrazine?
427nm plus or minus 3 nm.
Why the value of absorbance is always between the 0-2?
It's over 9000.
What is the absorbance value for thymol?
thymol blue 436, 545 and 595 nm
Why should an absorbance level not exceed a value of 1?
Since the absorbance level is actually just a fraction of radiation absorbed at a given wavelength, it should never rise above %100.
True or false As the concentration of a colored solution increases the absorbance value decreases?
Absorbance rises with concentration because there is more material for a given frequency of light to be absorbed in. Your statement is false.
Is wavelength or absorbance the dependent variable?
"absorbance"Since in the experiment, you probably choose the wavelength, then measure the absorbance (absorption?, the absorbance is the dependent variable.
What is the purpose of the blank?
Blank Sample in Spectrophotometry is used to measure the absorbance of light without sample. It is subtracted from the total absorbance for measurement of Absorbance from a sample's absorbance.
What is the purpose of blank samples?
Blank Sample in Spectrophotometry is used to measure the absorbance of light without sample. It is subtracted from the total absorbance for measurement of Absorbance from a sample's absorbance.
In a plot of absorbance vs concentration what does the slope represent?
The slope of absorbance vs concentration reptresents the value of εb, where ε is the absorbtivity with units of (L/mol cm) and b is path length measured in cm.
