why dichromate ions are used as breath analyzer?????????\


2 years ago


Answers : (1)


When the user exhales into a breath analyzer, any ethanol present in their breath is oxidized to acetic acid at the anode:

CH3CH2OH(g) + H2O(l) → CH3CO2H(l) + 4H+(aq) + 4e-

At the cathode, atmospheric oxygen is reduced:

O2(g) + 4H+(aq) + 4e- → 2H2O(l)

The overall reaction is the oxidation of ethanol to acetic acid and water.

CH3CH2OH(l) + O2(g) → CH3COOH(l) + H2O(l)

The electrical current produced by this reaction is measured by a microprocessor, and displayed as an approximation of overall blood alcohol content

2 years ago

Post Your Answer

More Questions On Inorganic Chemistry

Ask Experts

Have any Question? Ask Experts
Post Question
Answer ‘n’ Earn
Attractive Gift
To Win!!!
Click Here for details
HELP!!!! Please guide me how to study Periodic Classification Elements. Is it really important for Chemical Bonding? And also Do i need to cram it all up( Periodic Classification)? If yes...
yes the book you are having is very good.let me tell you chaemical bonding ,periodic table, forms the most imp part of chemistry so you shouls have a very strong command over it. only way...
Sunil Kumar FP 2 months ago
the half life for a first order reaction is 25 minutes. calculate the rate constant and apply it ti find the time required for 85% complition of the reaction ?
we have the relation between the half lide and the rate constant as half life t1/2=.693/k k is the rate constant or k=.693/t1/2 =.693/25 min^-1 =2.772*10^-2 min^-1 time required for 25%...
Sunil Kumar FP one month ago
what is meant by oxox acids and what about metal carbonates and sulphates nitrates
oxoacids are the acids of oxygen .example of such kind of acids are H2CO3,H2SO4,HClO etc METAL CARBONATE metal reacts with carbondioxide of the air to form carbonate.examples are...
Sunil Kumar FP 2 months ago
how to know that which reaction will be sn1 or sn2 ?
Let’s compare the SN1 and the SN2. The MechanismThe SN2 reaction is concerted. That is, the SN2 occurs in one step, and both the nucleophile and substrate are involved in the rate...
Saurabh Kumar 13 days ago
The vapour density of a mixture containing NO2 and N2O4 is 38.3 at 300K. The number of moles of NO2 in 100g of the mixture is … ?
The vapor density of a gas is the density of that gas relative to that of hydrogen gas. Therefore, Vapor density = (density of NO2/N2O4 mixture)/ (density of H2 gas) Vapor density = (mass of...
Sunil Kumar FP 3 months ago
convert 1-Bromo butane to Toluene
Harishwar one month ago
View all Questions »