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  • Stuck here, help me understand: Which of the following solution in water possesses the lowest vapour pressure

Which of the following solution in water possesses the lowest vapour pressure

  • Option 1)

    0.1(M)NaCl

  • Option 2)

    0.1(N)BaCl2

  • Option 3)

    0.1(M)KCl

  • Option 4)

    None of these

 

Answers (1)

best_answer

As we learned 

 

Application of Vant Hoff factor -

(a)\: \: \: \left ( \frac{\Delta P}{P^{0}} \right )_{obs}= X_{solute}\times i

(b)\: \: \: \left ( \Delta T_{b} \right )_{obs}= K_{b}\times m\times i

(c)\: \: \: \left ( \Delta T_{f} \right )_{obs}= K_{f}\times m\times i

(d)\: \: \: \left ( \pi \right )_{obs}= C\times R\times T\times i

-

 

 BaCl2 gives maximum ion hence it is shows lowest vapour pressure.

 


Option 1)

0.1(M)NaCl

Option 2)

0.1(N)BaCl2

Option 3)

0.1(M)KCl

Option 4)

None of these

Posted by

satyajeet

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