Chemistry

N2O5 is an unstable gas that decomposes according to the following reaction:
2N2O3(g) ---> 4NO2(g) + O2(g)
What would be the total pressure of gases present if a 10.0L container at 22.0 degree centigrade begins with 0.400 atm of N2O5 and the gas completely decomposes?

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  1. You made a typo on the equation.
    2N2O5 ==> 4NO2 + O2
    When using gases one may use the gas pressure as if it were mols.
    Convert atm N2O5 to atm NO2. That's 0.4 atom x (4 mols NO2/2 mols N2O5) = ? atm for NO2.
    0.4 atm x (1 mol O2/2 mols N2O5) - ? atm for O2.
    Add the two for Ptotal.

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  2. 1 atm

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