Which of the following behaviors is not ...

Which of the following behaviors is not true for an ideal solution?

Plot of `P_("total") versus chi_` is nonlinear

Plot of `P_("total") versus chi_(1) (or X_)` is linear

Plot of `P_(1) versus chi_(1)` is linear

Plot of `P_(2) versus chi_(2)` is linear

Text Solution

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The correct Answer is:

An ideal solution of substance 1 and 2 is one in which both substances follow Raoult's law for all values of mole fractions. Practically ideal solution occur when the substance mixed are chemically similar so that the intermolecular forces between "1" and "2" molecules are similar to those between two "1" molecules or between two "2" molecules. According to Raoult's law
`P_(1)=P_(1)^(@)chi_(1)`
`P_(2)=P_(2)^(@)chi_(2)`
Both these equations correspond to straight line equation of the type, `y=mx`.
Total vapor pressure over an ideal solution equals the sum of the particle vapour pressures each is given by Raoult's law:
`P_("total")=P_(2)^(@)+(P_(1)^(@)-P_(2))chi_(1)`
or
`P_("total")=P_(1)^(@)+(P_(2)^(@)-P_(1))chi_(2)`
Both these equations correspond to straight line equation of the type, `y=mx+c`

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Which of the following behaviours is true for an ideal binary liquid solution?

Plot of `1//P_("total") versus Y_(A) (or Y_(B))` is nonlinear

Plot of `P_("total") versus Y_(A)` is linear

Plot of `P_("total") versus Y_(B)` is linear

Plot of `1//P_("total") versus Y_(A) (or Y_(B))` is linear

Which of the following conditions is correct for an ideal solution?

`Delta_(mix)V=0 and Delta_(mix)S=0`

`Delta_(mix)Hgt 0 and Delta_(mix)Sgt 0`

`Delta_(mix)V=0 and Delta_(mix)Sgt 0`

`Delta_(mix)H=0 and Delta_(mix) gt0`

State which of the following statements is true for an ideal solution.

`Delta H_("mix") = (+)ve, DeltaV_("mix") = (+)ve`

`P_("Actual") lt P_("Theoretical")`

`Delta G_("mix") = (-)ve, DeltaS_("mix") = (+)ve`

`Delta G_("mix") = O,DeltaH_("mix") = O`