Solid potassium sulfide is slowly added to 150 mL of a copper(II) chloride solution until the concentration of sulfide ion is 0.0464 M. The maximum amount of copper(II) ion remaining in solution is ___ M

Explanation:

The concentration of copper (II) ions is calculated by expression shown as,

Here,

The solubility product of CuS is “ "

The concentration of copper ions is " "$. The concentration of sulfide ions is

The theoretical value of solubility product of is

Substitute the known values in equation (I).

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.