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The mole fraction of ethyl alcohol in it...

The mole fraction of ethyl alcohol in its solution with methyl alcohol is `0.80.` The vapour pressure of ethyl alcohol in the solution is 40mm of Hg. What is its vapour pressure in solution if the solution is ideal ?

A

25mm

B

30mm

C

32mm

D

20mm

Text Solution

Verified by Experts

The correct Answer is:
C
`p_(C_(2)H_(5)OH)=x_(C_(2)H_(5)OH^(xx))p_(C_(2)H_(5)OH)^(0)=0.80xx40mm=32mm`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-SOLUTIONS AND COLLIGATIVE PROPERTIES -Exercise 1 (Types of Solutions and Concentration of Solutions)
  1. A sample ofsea water contains 5xx10^(-3)g of dissolved oxygen in 1 kg ...

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  2. Vapour pressure of pure A is 70 mm of Hg at 25^(@)C. If it forms an id...

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  3. The mole fraction of ethyl alcohol in its solution with methyl alcohol...

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  4. Which of the following azeotropic solutions has the boiling point less...

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  5. At 25^(@)C, the total pressure of an ideal solution obtained by mixing...

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  6. An aqueous solution of methanol in water has vapour pressure

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  7. Two liquids X and Y form an ideal solution. The mixture has a vapour p...

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  8. A solution of acetone in ethnol

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  9. Equal masses of methane and oxygen are mixed in an empty container at ...

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  10. One component of a solution follows Raoult's over the entire range 0le...

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  11. On a humid day in summer, the mole fraction of gaseous H(2)O (water va...

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  12. The vapour pressure of two liquids 'P' and 'Q' are 80 and 60 torr resp...

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  13. At 300 K the vapour pressure of an ideal solution containing 1 mole of...

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  14. A mixture of ethyl alcohol and propyl alcohol has a vapour pressure of...

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  15. A solution containing components A and B follows Raoult's law, when

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  16. At 80^(@)C the vapour pressure of pure liquid 'A' is 520 mm Hg and tha...

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  17. Relative loweringof vapour pressure of a dilute solution is 0.2. What ...

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  18. Which of the following will show a negative deviation from Raoult's la...

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  19. Mole fraction of vapour of A above solution in mixture of A and B(X(A)...

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  20. In which case Raoult's law is not applicable ?

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