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The vapour pressure of two liquids ‘P’ an d ‘Q’ are 80 and 60 torr, respectively. The total vapour pressure of solution obtained by mixing 3 mole of P and 2 mole of Q would be [2005]
  • a)
    72 torr
  • b)
    140 torr
  • c)
    68 torr
  • d)
    20 torr
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The vapour pressure of two liquids ‘P’ an d ‘Q&rsquo...
Given V.PP = 80 torr  V.PQ = 60 torr
Ptotal = 48 + 24 = 72 torr
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Most Upvoted Answer
The vapour pressure of two liquids ‘P’ an d ‘Q&rsquo...
The vapor pressure of a liquid is the pressure exerted by its vapor when it is in equilibrium with its liquid phase at a given temperature. It is a measure of how volatile a liquid is and is affected by factors such as temperature and intermolecular forces.

The vapor pressure of a liquid can vary depending on its chemical composition, temperature, and surrounding environment. Generally, liquids with weaker intermolecular forces and lower boiling points tend to have higher vapor pressures.

For example, at a given temperature, a liquid with a lower boiling point will have a higher vapor pressure compared to a liquid with a higher boiling point. This is because the weaker intermolecular forces in the low boiling point liquid allow more molecules to escape from the liquid phase and form a vapor.

Additionally, increasing the temperature of a liquid will also increase its vapor pressure. This is because higher temperatures provide more energy to the liquid molecules, making it easier for them to overcome the intermolecular forces and escape into the vapor phase.

In summary, the vapor pressure of a liquid is influenced by factors such as temperature and intermolecular forces, and it can vary depending on the specific characteristics of the liquid.
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