Question

The quantity of heat evolved directly proportional to the mass of the solute that is dissolved in the solvent why?

Answer 1

Answer:HI

Explanation:

Logically how else would it be? If you have 500g of solute and 250g of solvent, you will evolve N amount of heat. This can be thought of as a reaction Solute + Solvent -> Solution + Energy (or -Energy perhaps). So each molecule of each substance involved in this process yields an amount of energy. If the mass is twice as much, then there are twice as many molecules involved, 2xSolute + 2xSolvent -> 2xSolution + 2xEnergy. We can say 2x more molecules since they are the same type of molecules in each case, with the same molecular weights.