Aerosol cans can be dangerous when they are heated because they can explode. Suppose a can of insecticide with a pressure of 4.0 atm at room temperature (28oC) is thrown into a fire. If the temperature of the gas inside the can reaches 400oC, what will be its pressure?
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Answers & Comments
Gay-Lussac's law is given by
where:
P₁ = initial pressure
T₁ = initial temperature (in kelvin)
P₂ = final pressure
T₂ = final temperature (in kelvin)
Note: If the given temperature is in °C, we must convert it to kelvin (K) first before substituting into the formula.
Listing the given values, we have
Arranging the equation, we can now solve for the final pressure of the gas. Therefore,
Hence, the pressure will be 8.9 atm.