VRD - Testing Carbon dioxide in air

MadSci Network: Environment & Ecology

Subject: VRD - Testing Carbon dioxide in air

Date: Wed Mar 8 17:31:51 2000
Posted by Beryl
Grade level: 10-12 School: No school entered.
City: No city entered. State/Province: No state entered. Country: No country entered.
Area of science: Environment & Ecology
ID: 952558311.En

Message:


A student is doing a project growing plants in 3 different atmospheres
     1. ordinary air (but in a terrarium type environment)
     2. carbon dioxide enriched (in a terrarium type environment) It is
entended to use bicarbonate and citric acid to generate the carbon dioxide.
     3. carbon dioxide depleted (in a terrarium type environment) Soda
Lime is intended to be used to cause this.

     Question how can she easily show the three atmospheres have different
amounts of carbon dioxide.
     I know bromothymol blue will show the enriched environment, but it
will no show a difference between ordinary air and the depleted
atmosphere. Any suggestions would be gratefully received.

Re: VRD - Testing Carbon dioxide in air

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