A laboratory technician measures the transmittance of light through a solution containing an unknown concentration of glucose.She determines that 75% of the light passing through the sample was transmitted.Which of the following equations defines the absorbance of the solution?

Question

Quizplus · Accepted Answer

The absorbance of a solution is defined as A = -log(T), where T is the transmitted light as a fraction or percentage. In this case, the transmitted light is 75%, which can be expressed as 0.75. Therefore, the absorbance is A = -log(0.75), which corresponds to choice B.

A Laboratory Technician Measures the Transmittance of Light Through a Solution