In a reaction between calcium hydroxide, Ca(OH)2, and lithium sulfide, Li2S, which of the
following, if any, would be the solid products?
calcium sulfide (CaS)
lithium hydroxide (LiOH)
calcium sulfide(CaS) and lithium hydroxide (LiOH)
no solid products

CaS calcium sulfide

Explanation:

hydroxides are insoluble except with group 1 like the lithium,

sulfides are insoluble in water and with calcium either

so CaS is insoluble

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.