Grams of gasoline needed to raise level of CO in air.

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SUMMARY

The discussion centers on calculating the grams of gasoline (C8H8) required to raise the carbon monoxide (CO) level in a garage to 1000 ppm by volume at standard temperature and pressure (STP). The calculations indicate that approximately 23.98 grams of gasoline must be burned to achieve this concentration. The process involves using the ideal gas law (PV=nRT) and stoichiometric relationships from the combustion reaction of octane. The final result confirms the necessary mass of gasoline needed for the specified CO level.

PREREQUISITES
  • Understanding of the ideal gas law (PV=nRT)
  • Knowledge of stoichiometry in chemical reactions
  • Familiarity with combustion reactions, specifically C8H8 + 6O2 → 8CO + 4H2O
  • Ability to perform molar mass calculations
NEXT STEPS
  • Study the ideal gas law applications in real-world scenarios
  • Learn about the environmental impact of CO emissions from gasoline combustion
  • Research the combustion properties of various hydrocarbons
  • Explore methods for measuring gas concentrations in enclosed spaces
USEFUL FOR

Chemistry students, environmental scientists, and anyone interested in the effects of combustion on air quality will benefit from this discussion.

eddzzz_2011
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Homework Statement



Assume that an incorrectly adjusted lawn mower is operated in a garage such that the combustion reaction in the engion is C8H8. If the dimentions of the garage are 5x3x3 meters. How many grams of gasoline must be burned to raide the levl of CO in the air to 1000ppm by volume STP?

Homework Equations



PV=nRT

The Attempt at a Solution



101325 (45) = n(8.314)(298)
4559625 = n(2477.572)
n = 1840.36024moles

1840.36.../1000
1.84ppm

C8H8 + 6O2 ----> 8CO + 4H2O.

1 mole octane = 8 moles of CO

1.84/8 = 0.23 (moles of C8H8)

Mr C8H8 = 104.15 (have no idea why I took Mr of CO).

mass = n*Mr

mass = 0.23*104.15

mass = 23.98g gasoline needed

Is this correct? Cheers guys
 
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eddzzz_2011 said:
1840.36.../1000
1.84ppm

1.84ppm? How is it related to the question?
 

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