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

Options

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`

Answer

D

Explanation

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 `