When a human exhales CO2 is carbonic acid created when it mixes with H2O?

Subject: When a human exhales CO2 is carbonic acid created when it mixes with H2O?

Date: Tue Jun 13 13:03:15 2000
Posted by Randy Bechtel
Grade level: nonaligned School: NC Museumof Natural Sciences
City: Raleigh State/Province: North Carolina Country: USA
Area of science: Biochemistry
ID: 960915795.Bc

Message:


I present live science programs at the Museum and this is the experiment I 
wanted to double check.  I have a beaker with tap water and the indicator 
Bromothymol Blue.  The indicator is blue indicating basic conditions, when 
I exhale into the water, with a straw, the indicator changes to yellow 
indicating an acid.  Have i just made the solution acidic with the CO2 from 
my exhale.

Re: When a human exhales CO2 is carbonic acid created when it mixes with H2O?

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