>>9796704You're going to have to be more specific.
Consider steam (gas) condensing to water (liquid). That's exothermic. Heat energy is released.
Your statement is equivalent to liquid>gas consumes LESS energy than liquid>liquid.
Why should that be?
During the intermediate steps of the reaction, everything is effectively gaseous; that is, bonds have been broken and the atoms are free to reshuffle, before reconnecting into compounds. That reconnection will release energy. Condensation into a liquid, generally, eliminates surface area and the energy associated with it, It would take more energy to keep the products from liquefying.
Which contradicts OP's assumption.
Not a chemist, but I'd like to know the (non-jokey) reasoning.
