Question

An example of the positive deviation shown in Figure 12.8(a) is a solution made of acetone $\left(\mathrm{CH}_3 \mathrm{COCH}_3\right)$ and carbon disulfide $\left(\mathrm{CS}_2\right)$. (a) Draw Lewis structures of these molecules. Explain the deviation from ideal behavior in terms of intermolecular forces. (b) A solution composed of 0.60 mole of acetone and 0.40 mole of carbon disulfide has a vapor pressure of 615 mmHg at $35.2^{\circ} \mathrm{C}$. What would be the vapor pressure if the solution behaved ideally? The vapor pressure of the pure solvents at the same temperature are acetone: 349 mmHg ; carbon disulfide: 501 mmHg . (c) Predict the sign of $\Delta H_{\text {soln }}$. 

   An example of the positive deviation shown in Figure 12.8(a) is a solution made of acetone $\left(\mathrm{CH}_3 \mathrm{COCH}_3\right)$ and carbon disulfide $\left(\mathrm{CS}_2\right)$. (a) Draw Lewis structures of these molecules. Explain the deviation from ideal behavior in terms of intermolecular forces. (b) A solution composed of 0.60 mole of acetone and 0.40 mole of carbon disulfide has a vapor pressure of 615 mmHg at $35.2^{\circ} \mathrm{C}$. What would be the vapor pressure if the solution behaved ideally? The vapor pressure of the pure solvents at the same temperature are acetone: 349 mmHg ; carbon disulfide: 501 mmHg . (c) Predict the sign of $\Delta H_{\text {soln }}$.
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Chemistry
Chemistry
Raymond Chang, Jason… 14th Edition
Chapter 12, Problem 129 ↓
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An example of the positive deviation shown in Figure 12.8(a) is a solution made of acetone $\left(\mathrm{CH}_3 \mathrm{COCH}_3\right)$ and carbon disulfide $\left(\mathrm{CS}_2\right)$. (a) Draw Lewis structures of these molecules. Explain the deviation from ideal behavior in terms of intermolecular forces. (b) A solution composed of 0.60 mole of acetone and 0.40 mole of carbon disulfide has a vapor pressure of 615 mmHg at $35.2^{\circ} \mathrm{C}$. What would be the vapor pressure if the solution behaved ideally? The vapor pressure of the pure solvents at the same temperature are acetone: 349 mmHg ; carbon disulfide: 501 mmHg . (c) Predict the sign of $\Delta H_{\text {soln }}$.
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An example of the positive deviation shown in Figure $12.8(\mathrm{a})$ is a solution made of acetone $\left(\mathrm{CH}_{3} \mathrm{COCH}_{3}\right)$ and carbon disulfide $\left(\mathrm{CS}_{2}\right)$. (a) Draw Lewis structures of these molecules. Explain the deviation from ideal behavior in terms of intermolecular forces. (b) A solution composed of $0.60$ mole of acetone and $0.40$ mole of carbon disulfide has a vapor pressure of $615 \mathrm{mmHg}$ at $35.2^{\circ} \mathrm{C}$. What would be the vapor pressure if the solution behaved ideally? The vapor pressure of the pure solvents at the same temperature are: acetone: $349 \mathrm{mmHg}$; carbon disulfide: $501 \mathrm{mmHg}$. (c) Predict the sign of $\Delta H_{\text {soln }}$.

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Q12. The experimental partial vapor pressures of a mixture of (a) chloroform and acetone, and (b) carbon disulfide and acetone are given in the following diagrams. Based on these diagrams, explain the origin of negative and positive deviations from ideality.
exercise-129-ekample-127-calculating-the-vapor-pressure-of-a-two-component-solution-a-solution-contains-395-g-of-carbon-disulfide-leftmathrmcs_2right-and-243-g-of-acetone-leftmathrmch_3-mathrmcoch2rig

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Transcript

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00:01 In this question we're going to be looking into ch3 or ch3.
00:06 And we're also going to be looking into cs2.
00:11 So the first part of the question is asking us to draw the louis structures of this compound.
00:17 And the louis structure just gives an overview of the bonding and the lone pair of electrons that exist within a molecule.
00:25 So what we're going to have here, this is c.
00:29 Let's just start with this ch3.
00:32 We only have bonding pairs here.
00:36 And we're going to have a c that is bonded to in oxygen.
00:40 So oxygen is in group 6 with 6 valence electrons.
00:43 So if it uses two of those electrons to bond with carbon through a double bond, there will be four electrons that will be left and bonded.
00:52 That is two long pair of electrons.
00:55 Then we have another branch of ch with only bonding electrons with the electrons with the two long without any loan pay.
01:01 Then looking at c, cs2, we're going to have c through a double bond to two sulfur atoms...
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