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A 1.00 molal aqueous solution of trichlo...

A 1.00 molal aqueous solution of trichloroacetic acid `("CCl"_3COOH)` is heated to its boiling point. The solution has a boiling point of `100.18^@C` . Determine the van't Hoff factor for trichloro acetic acid `(K_b " for water" = 0.512 K kg "mol"^(-1) )` .

Text Solution

Verified by Experts

Apply the relation
` Delta T_b = K_f xx m`
` Delta T_b = 0.512 xx 1 = 0.512`
van.t Hoff facto = Observed elevation in boiling point / Calculated elevation in boiling point
`= (0.18)/(0.512) = 0.3516`
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A 1.00 molal aqueous solution of trichloroacetic acid (CCl_(3)COOH) is heated to its boiling point. The solution has the boiling point of 100.18^(@)C . Determine the van't Hoff factor for trichloroacetic acid. ( K_(b) for water =0.512K kg "mol"^(-1) )

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Knowledge Check

  • 0.3 molal aqueous solution of sucrose boils at 100.51 ^(@) C . The boiling point of 0.7 molal aqueous solution of surose will be ____.

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    `100.09^(@)C`
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    `101.11 ^(@) C `
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