GANONG'S RESPIROSCOPE EXPERIMENT
AIM:
To demonstrate the liberation of CO2 during respiration by Ganong's respiroscope experiment.
APPARATUS:
Ganong's respiroscope, stand, beaker, germinating seeds, caustic potash solution.
PROCEDURE:
The Ganong's respiroscope consists of a bulb like part and a bent tube. Some germinating seeds are taken in the bulb and mouth of the bent tube is kept immersed in a beaker containing caustic potash(KOH) solution. The respiroscope is fixed in a stand. Thus, the enclosed air in the flask is completely cut off from the outside atmosphere. The apparatus is left undisturbed for a few hours.
OBSERVATION:
Caustic potash solution rises in the bent tube.
INFERENCE:
During respiration, the germinating seeds absorb O2 from the respiroscope and liberate CO2. The caustic potash absorbs the CO2 and a vaccum is created. So the KOH solution rises in the tube. This proves that CO2 is liberated during respiration.
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| Author: sasi kala | Member Level: Diamond | Revenue Score:  |
This is the simple experiment to demonstrate the liberation of CO2 during respiration by Ganong's respiroscope experiment.
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