What does 0.00 absorbance equal in terms of % Transmittance?

In the context of spectrophotometry, absorbance and transmittance are interrelated concepts used to describe how light interacts with a solution. Absorbance is a measure of the amount of light that is absorbed by the sample, while % transmittance indicates how much light passes through the sample without being absorbed.

When the absorbance is 0.00, it means that no light is being absorbed by the solution. According to the Beer-Lambert Law, absorbance is defined as A = -log(T), where T is the transmittance expressed as a fraction (not percentage). If there is no absorption, all incoming light is transmitted through the sample.

In terms of % transmittance, a reading of 0.00 absorbance implies that the transmittance is 100%. This is because 100% transmittance indicates that all light passes through the sample without any being absorbed. Therefore, if the absorbance is 0, it signifies that the sample is completely transparent to the light tested, resulting in a transmittance of 100%.

This conceptual framework is fundamental in analytical chemistry and assists analysts in interpreting results from spectrophotometric measurements accurately. Thus, the relationship shows that at 0