Which of the following changes will lead to an increase in the rate of dissolving. a. increasing the surface area of the solute
b. stirring the solution
c. increasing the temperature of the solution
d. All of the above

you need to give more information

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.