Breath ethyl alcohol

Medically, ethyl alcohol is classified as a hypnotic (sleep producer) it is less toxic than other alcohols. (Methanol, for example, is quite poisonous drinking it, breathing it for prolonged periods, or allowing it to remain long on the skin can lead to blindness or death.)... 

The breathalyzer detects the presence of ethanol (ethyl alcohol) in the breath of persons suspected of drunken driving. It utilizes the oxidation of ethanol to acetaldehyde by dichromate ions in acidic solution. The Cr202 -(aq) ion is orange (see Example 11-23). The Cr +(aq) ion is green. The appearance of a green color signals alcohol in the breath that exceeds the legal limit. Balance the net ionic equation for this reaction. 

Ethyl Alcohol All-purpose canister safety goggles. Avoid contact with liquid and irritation of vapors. If breathing is affected, remove victim to the fresh air call physician administer oxygen. Speed is of primary importance. Rush with water. Rush with water. 

A chemical breathalyzer test works because ethyl alcohol in the breath is oxidized by the dichromate ion (orange) to form acetic acid and chromium(III) ion (green). The balanced reaction is... 

Figure 18.14 is a spectrum of a dog s expired air three hours after the forced ingestion of isopropyl alcohol. The alcohol bands and those of its metabolite, acetone, can be specifically and quantitatively identified. Ethyl alcohol can be specifically and quantitatively analyzed in human breath and such infrared analysis permits one to estimate blood alcohol concentration. 

Spirit spir-9t [ME, fr. OF or L OF, fr. L spiritus, lit., breath, fr spirare to blow, breathe] (13c) . (1) In the paint industry, this term is used somewhat loosely but generally refers to commercial ethyl alcohol normally sold as industrial methylated spirit. (2) The term mineral spirits (in UK as white spirit , mainly defines a mixture of ahphatic hydrocarbons with a proportion of aromatic hydrocarbons. 

Headspace Analysis for Ethyl Alcohol in Blood, Breath, and Urine Specimens, Using a Specialized Gas Chromatograph... 

Breathalyzers work because the amount of ethyl alcohol in the breath is proportional to the amount of ethyl alcohol in the bloodstream. One type of breathalyzer employs a fuel cell to measure the amount of alcohol in the breath. The fuel cell... 

Police often use a device called a breathalyzer to measure the amount of ethyl alcohol (C2HgO) in the bloodstream of a person suspected of driving under the influence of alcohol (Figure 18.19 ). Breathalyzers work because the quantity of ethyl alcohol in the breath is proportional to the quantity of ethyl alcohol in the bloodstream. One t5rpe of breathalyzer employs a fuel cell to measure the quantity of alcohol in the breath. When a suspect blows into the breathalyzer, ethyl alcohol is oxidized to acetic acid at the anode ... 

FIGURE 18.19 Fuel-Cell Breathalyzer The fuel-ceU breathalyzer works by oxidizing ethyl alcohol in the breath to acetic acid. The electrical current that is produced is proportional to the concentration of ethyl alcohol in the breath. 

A Breathalyzer instrument contains two ampules, each of which contains 0.75 mg K2Cr207 dissolved in 3 mL of 9 M H2S04(aq). One of the ampules is used as reference. When a person exhales into the tube of the Breathalyzer, the breath is directed into one of the ampules, and ethyl alcohol in the breath converts Cr207 into Cr. The instrument compares the colors of the solutions in the two ampules to determine the breath alcohol content (BrAC), and then converts this into an estimate of BAC. The conversion of BrAC into BAC rests on the assumption that 2100 mL of air exhaled from the lungs contains the same amount of alcohol as 1 mL of blood. With the theory and assumptions described in this problem, calculate the molarity of K2Cr207 in the ampules before and after a breath test in which a person with a BAC of 0.05% exhales 0.500 L of his breath into a Breathalyzer instrument. 

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