Final answer:
BAC can be analyzed on the road using a Breathalyzer, which measures the ethanol concentration in breath. In the lab, BAC can be analyzed using blood or breath testing, providing quantitative measurements of alcohol levels.
Step-by-step explanation:
The analysis of blood alcohol concentration (BAC) can be done on the road using a portable device called a Breathalyzer. The Breathalyzer measures the ethanol concentration in a person's breath, which is directly proportional to the BAC. It works by using the oxidation of ethanol by the dichromate ion, and the change in color of the solution indicates the amount of ethanol in the breath sample.
In the lab, BAC can be analyzed using blood or breath testing. Blood testing is more accurate and involves drawing a blood sample and analyzing it in a lab. Breath testing, like the one done with a Breathalyzer, measures the ethanol concentration in the breath, which is converted to BAC using a conversion factor. Both methods provide quantitative measurements of alcohol levels in the body.