A device has been designed to measure the flow rate of carbon dioxide evolved from a fermentation reactor. The reactor is sealed except for a tube that allows the generated CO2 to bubble through a soap solution and into a vertical glass tube with an internal diameter of 1.2 cm. On leaving the soap solution, the bubbles form thin soap films stretched across the tube and pushed through the tube by the CO2. Ambient temperature and pressure are 27°C and 755 mm Hg. It takes the films 7.4 s to traverse the 1.2 m between two calibration marks on the tube. 1. Sketch the apparatus. 2. What is the rate of generation of CO2 in mol/min? 3. A more refined analysis of the system takes into account that the gas leaving the fermentation reactor contains water with a partial pressure of 26.7 mm Hg. Calculate the percentage error in Part (b) using this new information.
A device has been designed to measure the flow rate of carbon dioxide evolved
from a fermentation reactor. The reactor is sealed except for a tube that allows
the generated CO2 to bubble through a soap solution and into a vertical glass
tube with an internal diameter of 1.2 cm. On leaving the soap solution, the
bubbles form thin soap films stretched across the tube and pushed through
the tube by the CO2. Ambient temperature and pressure are 27°C and 755 mm
Hg. It takes the films 7.4 s to traverse the 1.2 m between two calibration marks
on the tube.
1. Sketch the apparatus.
2. What is the rate of generation of CO2 in mol/min?
3. A more refined analysis of the system takes into account that the gas
leaving the fermentation reactor contains water with a partial pressure
of 26.7 mm Hg. Calculate the percentage error in Part (b) using this new
information.
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