Chemistry Experiment Partial Molar Volumes

CMY282
EXPERIMENT 5 ANSWER SHEET
PARTIAL MOLAR VOLUMES

spot: …………………………..………………
Student number: …………………………..…………….…

Title:

Abstract:


Results

1. Volume countings

Temperature: ?w = (from evade 6-1)

Table 6-2: Calculation of volumes of water and fermentation alcohol
XwXEVw (cm3)VE (cm3)
10.8
20.6
30.4
40.2

2.Preparation of the liquid mixtures and calculation of their exact groyne fractions

Table 6-3: Calculation of the composition of the demonstrable samples
Empty
Flask
m0 (g)Flask +
W
mA*(g)Flask +
W + E
mB*(g)mA* - m0

mw (g)mB* - mA*

mE (g)mw/Mw

nw (mol)mE/ME

nE (mol)nE/(nw+nE)

XE
pissing-------0
1
2
3
4
Ethanol-------1

3. endeavor of the volume of the pycnometer

gage of empty pycnometer:g
Temperature of the waterbath: ____?C
aggregate of full pycnometer:g
.?. Mass of the water:g
.?. Volume of pycnometer:ml


4.



Determination of the densities of the water/ethanol mixtures

Table 6-4: Calculation of the densities and molar volumes of the mixtures of water and ethanol
XE XwMaverage

(g/mol)Mass of
pycnometer
(g)Mass of
pycnometer
+liquid (g)Mass of
liquid
(g)Density

(g/cm3)Molar Volume
Vm
(cm3/mol)
Water01
10.2
20.4
30.6
40.8
Ethanol10

5. Determination of the niggardliness of an inexplicable mixture
Use interpret paper or a spreadsheet and paste your curve in the space provided below. Clearly indicate how you have determined the density and calculated the composition of the unknown mixture.

Figure 6.1: Density versus mol fraction curve for a binary water/ethanol mixture



Density of the unknown mixture:g/cm3

Composition of the unknown mixture:

6. Calculation of the partial molar volumes


Note: B is ethanol
partial tone Molar Volume of water at XB = 0.3:
Partial Molar Volume of ethanol at...If you want to get a full essay, order it on our website: Orderessay



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