Experiment 10
Breathalyzer Reaction: PRELAB
1. The device used to measure the alcohol content of a person's breath is the
2. The breathalyzer test is based on the fact that the concentration of alcohol in one's is directly proportional to the concentration of alcohol in one's blood.
3. There are many different compounds that are classified as alcohols. For example, the alcohol found in rubbing alcohol is a different chemical compound than the alcohol present in alcoholic beverages. Ethanol is the name of the alcohol in alcoholic beverages. What is the chemical formula for ethanol?
4. The color of dichromate ion in solution is
The color of chromium ion in solution is
5. If a beverage labeled as 120 Proof, what is the percentage of alcohol present there by volume?
6. Which chemical should you handle with care in this experiment (see next page)?
What is the first thing you should do if you get some on your skin?
Homework Answers
Q1.
typically known as a breathanalytzer or alcoholimeter
Q2
one's body/ blood
Q3
CH3CH2OH or C2H5OH also C2H6O
Q4
dichromate solution = orange
chromate solution = yellow
Q5
120 proof = 120/2 = 60% alcohol by volume
Q6
dichromate, since it oxidizes readily
if there is some in skin, then get directly to wash it for at least 5 -10 mins
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Date_ Name Experiment 10 Breathalyzer Reaction: PRELAB 1. The device used to measure the alcohol content...
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1) What chemical is the titrant in this experiment? What
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just the prelab worksheet, no data yet
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