jessica007
Posts: 1
Joined: Sat Apr 23, 2011 5:41 am
Occupation: student

science fair due in 3 months .

Postby jessica007 » Sun Apr 24, 2011 9:15 am

is it possible to use the gas which is formed by citric acid and baking soda when mixed and water is added to change into electricity?

rmarz
Expert
Posts: 594
Joined: Sat Oct 25, 2008 1:26 pm
Occupation: Technology Consultant

Re: science fair due in 3 months .

Postby rmarz » Sun Apr 24, 2011 4:39 pm

jessica007 - The gas resulting from the citric acid + baking soda reaction is non-combustible carbon dioxide. Using the gas directed through an appropriate nozzle to turn an impeller or vane, as in a wind turbine, would produce some electricity. You could use a DC motor as your generator. Much more complex (and expensive) would be to use a piston engine similar to a model steam engine to turn a shaft which in turn would drive the electric generator. In any case, a fairly large volume of gas would be required to sustain even a small amount of electricity generation.

Rick Marz


Return to “Grades 6-8: Physical Science”