When ethanol is added to water at 25 °C and 1 bar, the total volume of the solution changes according to the empirical function cm x - 0.36394 cm (mol EtOH) = ** V = 1002.93 cm + 56.6664 mol EtOH cm (mol EtOH) + 0.028256- where x is the number of moles of ethanol in the solution. As ethanol is added to the solution, the partial molar volume of ethanol decreases, reaches a minimum, and then increases. This behavior is shown in the figure below. Find the function for (ma) find the value x = ng 56 Ong TP How many moles of ethanol are present when the partial molar volume of ethanol in the solution is minimum? How many moles of water are present if the mole fraction of ethanol with this amount of ethanol present is 0.0952? 53 5. *- nmol 10 Is the partial molar volume of water increasing, decreasing with increasing x, at a maximum or at a minimum? Explain based on an equation based on an equation from the lecture slides. Partial melar volume, VAcm mot

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When ethanol is added to water at 25 °C and 1 bar, the total volume of the solution changes
according to the empirical function
cm
x - 0.36394
cm
(mol EtOH)
= **
V = 1002.93 cm + 56.6664
mol EtOH
cm
(mol EtOH)
+ 0.028256-
where x is the number of moles of ethanol in the solution.
As ethanol is added to the solution, the partial molar volume of ethanol decreases, reaches a
minimum, and then increases. This behavior is shown in the figure below.
Find the function for (ma) find the value x = ng
56
Ong TP
How many moles of ethanol are present when the partial molar
volume of ethanol in the solution is minimum?
How many moles of water are present if the mole fraction of
ethanol with this amount of ethanol present is 0.0952?
53
5.
*- nmol
10
Is the partial molar volume of water increasing, decreasing with increasing x, at a maximum or
at a minimum? Explain based on an equation based on an equation from the lecture slides.
Partial melar volume, VAcm mot
Transcribed Image Text:When ethanol is added to water at 25 °C and 1 bar, the total volume of the solution changes according to the empirical function cm x - 0.36394 cm (mol EtOH) = ** V = 1002.93 cm + 56.6664 mol EtOH cm (mol EtOH) + 0.028256- where x is the number of moles of ethanol in the solution. As ethanol is added to the solution, the partial molar volume of ethanol decreases, reaches a minimum, and then increases. This behavior is shown in the figure below. Find the function for (ma) find the value x = ng 56 Ong TP How many moles of ethanol are present when the partial molar volume of ethanol in the solution is minimum? How many moles of water are present if the mole fraction of ethanol with this amount of ethanol present is 0.0952? 53 5. *- nmol 10 Is the partial molar volume of water increasing, decreasing with increasing x, at a maximum or at a minimum? Explain based on an equation based on an equation from the lecture slides. Partial melar volume, VAcm mot
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