Conversion of water into steam is a?

Explanation

OPTION A: Because ∆G =∆H - T∆S at this temperature ∆G = 0, indicating that the liquid and vapor phases are in equilibrium. The normal boiling point of water is therefore 373.15K. Above the normal boiling point, the T∆S term is greater than ∆H, making ∆G < 0; hence, liquid water evaporates spontaneously.OPTION B: Conversion of water into steam is not an exothermic reaction, but an endothermic process as it absorbs heat to convert it from liquid to gas state.OPTION C: The conversion of water into steam is not a reversible reaction because it involves a change in the physical state of matter, which is not a reversible process.OPTION D: It is not a combustion reaction because it is a physical change caused by the application of heat, not a chemical reaction involving fuel and an oxidizing agent.