It is always feasible that a substance will dissolve in water when enthalpy is positive and entropy is negative. The correct option is A.
What are enthalpy and entropy?
Enthalpy is a term used to show the total energy or heat present in a thermodynamic system when the pressure remains constant. Entropy is the energy of a system that is unuseful to do work.
A substance will dissolve in water when its enthalpy will be positive and the entropy, the energy which is not available for work, will be negative.
Thus, the correct option is A. Enthalpy is positive and entropy is negative regarding a substance will dissolve in water.
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