NaCl(s) → Na+(aq) + Cl-(aq) entropy increasing or decreasing?

Explanation:

Entropy increasing

This is because there is a change of state from solid to aqueous.

The aqueous state( liquid state) is a state that the particles have a greater degree of freedom compared to the solid state

This indicates an increasing entropy

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.