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Gurlie Gurl
Gurlie Gurl asked in Science & MathematicsChemistry · 1 decade ago

There are two unknowns for this question heat of vaporization and P2..please helpp!?

The vapor pressure of dichloromethane, CH2Cl2, at 0 degrees celsius is 134mmHg. The normal boiling point of dichloromethane is 40 degrees celsius. Calculate its molar heat of vaporization.

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  • Big_Kid
    Lv 5
    1 decade ago
    Favorite Answer

    P2 is known. Normal boiling point implies that the pressure is 1 atm.

    Normal boiling point is defined where the vapor pressure of a liquid is equal to the atmospheric pressure at sea level (1 atm)

    So now you just have one unknown, heat of vaporization. Plug away!

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