1. Tardigrade
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  3. Chemistry
  4. The diagram given below represents the vapour pressure and mole fraction of an ideal solution of component 1 and 2. Answer the following questions. What does lines I, II and III indicate?

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Q. The diagram given below represents the vapour pressure and mole fraction of an ideal solution of component $1$ and $2$. Answer the following questions.
What does lines I, II and III indicate?Chemistry Question Image

Solutions

Solution:

These lines (I and II) pass through the points for which $x_{1}$ and $x_{2}$ are equal to unity. The plot (line III) of $p_{\text {total }}$ versus $x_{2}$ is linear.
image
The plot of vapour pressure and mole fraction of an ideal solution at constant temperature i.e. the dashed lines I and II represent the partial pressure of the components. The total vapour pressure is given by line marked III.