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In a solution of volatile components A and B, if the vapor pressure of A is 80 m

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Question: In a solution of volatile components A and B, if the vapor pressure of A is 80 mmHg and that of B is 20 mmHg, what is the total vapor pressure?

Options:

  1. 100 mmHg
  2. 80 mmHg
  3. 60 mmHg
  4. 20 mmHg

Correct Answer: 100 mmHg

Solution: 

The total vapor pressure of a solution is the sum of the partial vapor pressures of its components: 80 mmHg + 20 mmHg = 100 mmHg.

In a solution of volatile components A and B, if the vapor pressure of A is 80 m

Practice Questions

Q1
In a solution of volatile components A and B, if the vapor pressure of A is 80 mmHg and that of B is 20 mmHg, what is the total vapor pressure?
  1. 100 mmHg
  2. 80 mmHg
  3. 60 mmHg
  4. 20 mmHg

Questions & Step-by-Step Solutions

In a solution of volatile components A and B, if the vapor pressure of A is 80 mmHg and that of B is 20 mmHg, what is the total vapor pressure?
  • Step 1: Identify the vapor pressure of component A, which is given as 80 mmHg.
  • Step 2: Identify the vapor pressure of component B, which is given as 20 mmHg.
  • Step 3: To find the total vapor pressure, add the vapor pressures of A and B together.
  • Step 4: Perform the addition: 80 mmHg + 20 mmHg.
  • Step 5: The result of the addition is 100 mmHg, which is the total vapor pressure.
  • Vapor Pressure – The pressure exerted by a vapor in equilibrium with its liquid or solid phase at a given temperature.
  • Dalton's Law of Partial Pressures – The total pressure exerted by a mixture of gases is equal to the sum of the partial pressures of each individual gas.
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