Predict whether carbon dioxide or water would have a higher boiling point. Explain your prediction in terms of the attractions b
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Answer: MM = 16.55 g/mol
Explanation: <u>Freezing</u> <u>point</u> <u>depression</u> is a phenomena that explains why adding a solute to a solvent decreases the solvent freezing point: when a substance begins to freeze, its molecules slows down and rearrange itself forming a solid. If a solute is added, the molecules from the solvent interfere in the formation of the solid. To guarantee the transformation, the solution has to cooled down even more.
Freezing point and molality concentration is related by
where
ΔT is freezing point depression
and
are freezing point of solvent and solution, respectively
is freezing point depression constant
m is molality concentration
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Dibenzyl ether is the solvent and has the following properties: 6.27 and
= 3.6°C.
Molality concentration is
m = 0.415
<u>Molality</u> <u>concentration</u> is moles (n) of solute dissolved in a mass, in kilogram, of solvent.
n = m(mass of solvent in kg)
n = 0.415(0.035)
n = 0.0145
<u>Molar</u> <u>mass</u> (M) is the weight of one sample mole and can be calculated as
M =
m in grams
Molar mass of compound X is
M = 16.55
<u>Molar mass of molecular</u><u> compound X is 16.55g/mol</u>