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Given the total pressure is 2 atm. Also the partial pressure of the two components in an ideal solution is 1 atm and 0.5 atm. It shows __________ deviation.
- a)Positive
- b)Negative
- c)Neutral
- d)None of the mentioned
Correct answer is option 'A'. Can you explain this answer?
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Given the total pressure is 2 atm. Also the partial pressure of the tw...
Explanation: If the total pressure is greater than sum of partial pressure then it shows positive deviation.
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Given the total pressure is 2 atm. Also the partial pressure of the tw...
Explanation:
In an ideal solution, the partial pressure of each component is directly proportional to its mole fraction in the solution. The mole fraction is the ratio of the number of moles of a component to the total number of moles in the solution.
In this case, the total pressure is 2 atm. The partial pressure of one component is 1 atm and the partial pressure of the other component is 0.5 atm. The mole fraction of the first component can be calculated as:
Mole fraction of component 1 = (Partial pressure of component 1) / (Total pressure) = 1 atm / 2 atm = 0.5
Similarly, the mole fraction of the second component can be calculated as:
Mole fraction of component 2 = (Partial pressure of component 2) / (Total pressure) = 0.5 atm / 2 atm = 0.25
Now, the sum of the mole fractions of all components in an ideal solution should be equal to 1. In this case:
Mole fraction of component 1 + Mole fraction of component 2 = 0.5 + 0.25 = 0.75
Since the sum of the mole fractions is less than 1, there is a deviation from ideality. This deviation is known as positive deviation.
Positive deviation:
In a positive deviation, the intermolecular forces between the components are stronger than the forces between the molecules of the same component. This leads to a higher vapor pressure and lower boiling point than predicted by Raoult's law.
In this case, the partial pressure of the components in the solution is higher than expected based on their mole fractions. This indicates that the intermolecular forces between the components are stronger, causing the components to escape more easily from the solution and leading to a higher total pressure.
Therefore, the given scenario exhibits positive deviation from ideality.
In an ideal solution, the partial pressure of each component is directly proportional to its mole fraction in the solution. The mole fraction is the ratio of the number of moles of a component to the total number of moles in the solution.
In this case, the total pressure is 2 atm. The partial pressure of one component is 1 atm and the partial pressure of the other component is 0.5 atm. The mole fraction of the first component can be calculated as:
Mole fraction of component 1 = (Partial pressure of component 1) / (Total pressure) = 1 atm / 2 atm = 0.5
Similarly, the mole fraction of the second component can be calculated as:
Mole fraction of component 2 = (Partial pressure of component 2) / (Total pressure) = 0.5 atm / 2 atm = 0.25
Now, the sum of the mole fractions of all components in an ideal solution should be equal to 1. In this case:
Mole fraction of component 1 + Mole fraction of component 2 = 0.5 + 0.25 = 0.75
Since the sum of the mole fractions is less than 1, there is a deviation from ideality. This deviation is known as positive deviation.
Positive deviation:
In a positive deviation, the intermolecular forces between the components are stronger than the forces between the molecules of the same component. This leads to a higher vapor pressure and lower boiling point than predicted by Raoult's law.
In this case, the partial pressure of the components in the solution is higher than expected based on their mole fractions. This indicates that the intermolecular forces between the components are stronger, causing the components to escape more easily from the solution and leading to a higher total pressure.
Therefore, the given scenario exhibits positive deviation from ideality.
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Given the total pressure is 2 atm. Also the partial pressure of the two components in an ideal solution is 1 atm and 0.5 atm. It shows __________ deviation.a)Positiveb)Negativec)Neutrald)None of the mentionedCorrect answer is option 'A'. Can you explain this answer?
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