Chemistry

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A two-liter plastic soft drink bottle can withstand a pressure of 5.00 atm. Half a cup (approximately 120mL) of ethyl alcohol, (d=0.789g/mL) is poured into a soft drink bottle at room temperature. The bottle is then heated to 100C (3sig figs), changing the liquid alcohol to a gas. What is the pressure caused by the gas?

Pf= 4.65(.120)/297 x 373/.120 = 5.84
Can some one let me know if this is correct

  • Chemistry -

    Use:
    PV = nRT
    n = number of moles
    Find the mass of ethyl alcohol = Density x Volume in mLs
    Divide the mass by 1 mole C2H5OH --> n
    R = 0.0821 L.atm/K.mol
    T = 273 + 100 = 373K
    L = 2.00 L
    Substitute and solve for P

  • Chemistry -

    1 mole of C2H5OH = 12.011•2 + 1.00794•6 + 16.00 = 46.07 grams

  • Chemistry -

    First of all, density is mol./L. Therefore L x D will give you n. Then you plug in the numbers into P=nRT/V

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