1.

For a non-ideal solution with a-ve deviation

Answer»

`Delta H_(MIX)=-ve`
`Delta V_(mix)=-ve`
`Delta S_(mix)=-ve`
`Delta G_(mix)=-ve`

Solution :Explanation : (a) For -ve deviation
`Delta H_(mix)` = -ve due to greater FORCES of attraction after mixing.
STATEMENT (a) is correct.
`Delta V_(mix)` = -ve because volume of resulting solution decreases as PARTICLES come close together.
Statement (b) is correct
`Delta G_(mix)=-ve` because
`Delta G=Delta H-T Delta S=(-)Delta H-T(+Delta S)=-ve`
Hence, choice (d) is correct.
`Delta S_(mix) =+ve`, Entropy ALWAYS increases on mixing.
Statement (c )is incorrect.


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