1.

Solubility of a solute in a solvent ( say H_(2)O ) is dependent on temperature as given by S = Ae^(- Delta H // RT ) where Delta H is heat of reaction Solute + H_(2)O hArr Solution , Delta H = +- X For a given solution variation of logs with temperature is shown graphically. Hence solute is

Answer»

`CuSO_(4). 5H_(2)O`
`NACL`
Sucrose
CaO

Answer :D


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