Home
Class 12
CHEMISTRY
A 1.00 molal aqueous solution of trichlo...

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)`)

Text Solution

Verified by Experts

Observed boiling point elevation `Delta T_(b) = 100.18 - 100.0 = 0.18^(@)C`
Molality of solution = 1.00 m
Calculated boiling point elevation,
`Delta T_(b)`(calc) ` = k_(b) xx m`
`= 0.512 xx 1 = 0.512`
Van.t Hoff factor , i
` = ("Observed boiling point elevation")/("Calculated boiling point elevation")`
`= (0.18)/(0.512) = 0.351`
Promotional Banner

Topper's Solved these Questions

  • SOLUTIONS

    MODERN PUBLICATION|Exercise PRACTICE PROBLEMS|100 Videos

  • SOLUTIONS

    MODERN PUBLICATION|Exercise ADVANCED LEVEL (PROBLEMS)|21 Videos

  • SOLID STATE

    MODERN PUBLICATION|Exercise UNIT PRACTICE TEST|13 Videos

  • SURFACE CHEMISTRY

    MODERN PUBLICATION|Exercise COMPETITION FILE (OBJECTIVE TYPE QUESTIONS) (MATCHING LIST TYPE QUESTIONS)|2 Videos

Similar Questions

Explore conceptually related problems

1.0 molal aqueous solution of an electrolyte X_(3)Y_(2) is 25% ionised . The boiling point of the solution is : ( K_(b) for H_(2)O = 0.52K kg/mol)

If 0.2 molal aqueous solution of a weak acid (HA) is 40% ionised then the freezing point of the solution will be ( K_f for water = 1.86^@ C

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 ____.

1.0 molal aqueous solution of an electrolyte X_(3)Y_(2) is 25% ionized. The boiling point of the solution is (K_(b) for H_(2)O = 0.52 K kg//mol) :

0.1 molal aqueous solution of an electrolyte AB_(3) is 90% ionised. The boiling point of the solution at 1 atm is ( K_(b(H_(2)O)) = 0.52 kg " mol"^(-1) )