A breathalyzer instrument contains two ampules each of

Reference no: EM13640445

A Breathalyzer instrument contains two ampules, each of which contains 0.75 mg K2Cr2O7 dissolved in 3 mL of 9 mol L^-1 H2SO4(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 (CH3CH2OH) in the breath converts Cr2O72? into Cr3+. The instrument compares the colours of the solutions in the two ampules to estimate the blood alcohol content. The estimate of the BAC rests upon the assumption that 2100 mL of air exhaled from the lungs contains the same amount of alcohol as one millilitre of blood.
The Breathalyzer instrument typically tests 52.5 mL of exhaled breath.

1b) If the test of such a breath sample yields a reading of 0.08%, what are the partial pressure and mole fraction of CH3CH2OH in the breath of the person who was tested? Assume the atmospheric pressure and temperature are 101 kPa and 21.0 oC, respectively

Reference no: EM13640445

Questions Cloud

You select a rental package that includes a car with an : you select a rental package that includes a car with an average consumption of 6.00 of fuel per 100 . considering that

Design a cooling system for this device as an emergency : an emergency situation developed as a result of the failure of the cooling system of a portable electronic device used

Does this lack of proper technique result in the molar mass : from the time the mass of the flask is first measured until the time it is finally measured it is handled a number of

There are 6 types of rolls available in a bakery in : provide a detail explanation for every case1. there are 6 types of rolls available in a bakery in quantities of dozens

A breathalyzer instrument contains two ampules each of : a breathalyzer instrument contains two ampules each of which contains 0.75 mg k2cr2o7 dissolved in 3 ml of 9 mol l-1

Initially at time t 0 a particle is moving vertically at 4 : initially at time t 0 a particle is moving vertically at 4 ms and horizontally at 0 ms. its horizontal acceleration is

A highey curve forms a section of a circle a car goes : a highey curve forms a section of a circle. a car goes around the curve. its dashboard compass shows that the car os

The researchers defined the variable to be measured as the : a pet company has a business objective of expanding its product line beyond its current kidney- and shrimp-based cat

The turbine of a large power plant receives 100 x 108 btuh : the turbine of a large power plant receives 1.00 x 108 btuh of heat from the boiler at 900degf and rejects 5.50 x 106

User Account

All Pages