1.

Which of the following statement is true when ethanol dissolves in water.

Answer»

the mixture is a MAXIMUM boiling point azeotrope
there is an increase in volume when ethanol dissolves in water
the reactino between water and ethanol is highly exothermic
the vapour pressure of ethanol decreases when it is mixed with water.

Solution :On mixing ethanol with water, the extent of hydrogen bonding in water decreases. The unlike forces become weaker than the original LIKE forces and the volume increases. Further the process is ALSO endothermic.
`Delta V_(mix) gt 0`. `Delta H_(MAX) gt 0`.


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