Question

Freezing point depression V_water T_water V_alcohol T_alcohol 15.000 0.000 3.000 -5.000 (V = volume in Ml)...

Freezing point depression

V_water

 T_water V_alcohol T_alcohol
15.000 0.000 3.000 -5.000

(V = volume in Ml) (T= temp in celcius)

calculate

– Mass of Isopropyl Alcohol

– Experimental Molality

– Experimental Moles of Isopropyl Alcohol

– Experimental Molecular Weight of Isopropyl Alcohol

– % Error of Molecular Weight of Isopropyl Alcohol

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Homework Answers

Answer #1

The density of water is 1 g/mL. The mass of 15.000 mL of water will be 15.000 g.

(1) The density of isopropyl alcohol is 0.786 g/mL. The mass of 3.000 mL of water will be  

(2) The theoretical molecular weight of isopropyl alcohol is 60 g/mol. The number of moles

(3) The molality is the ratio of the number of moles of isopropyl alcohol to the mass of water (in kg).

(4) The molecular weight of isopropyl alcohol

(5) Percent error in molecular weight

%

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