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Which of the following conditions are co...

Which of the following conditions are correct for real solutions showing negative deviation from Raoult's law?

A

`Delta H_(mix) lt 0, Delta V_(mix) gt 0`

B

`Delta H_(mix) gt 0, Delta V_(mix) gt 0`

C

`Delta H_(mix) gt 0, Delta V_(mix) lt 0`

D

`Delta H_(mix) lt 0, Delta V_(mix) lt 0`

Text Solution

Verified by Experts

The correct Answer is:
D
Conditions that are correct for real solutions showing negative deviation from Raoult's law are as follows
` P_(A) lt P_(A)^@ X_(A) and P_(B) lt P_(A)^@ X_(B)`
` Delta _(mix ) H=-ve `
Dissolution is exothermic heating decrease solubility `Delta _("mixing ") V=-ve `
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Knowledge Check

  • Which of the following is/are correct for Boyle's law ?

    A
    (iv)
    B
    (ii), (iv)
    C
    (i) ,(iv)
    D
    (ii), (iii)

  • Which is/are correct for real gases?

    A
    `underset(P to 0)(L t) (PV_m)` = constant at constant high temperature
    B
    `underset(V_m to 0)(L t) (PV_m)`= constant at constant low temperature
    C
    As the temperature is reduced, the pressure decreases
    D
    A point is reached where theoretically, the volume become zero

  • Which is/are correct for real gases ?

    A
    `Lt_(P to 0)(PV_(m))` =constant at constant high temperature
    B
    `Lt_(V_(m) to 0) (PV_(m))`= constant at constant low temperature
    C
    As the temperature is reduced, the pressure decreases
    D
    A point is reached where, theoretically, the volume become zero

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