When is ksp determined for a system? (select all that apply.)
-any time that the solid and liquid phases are both present
-only after all solid has been dissolved
-when equilibrium is established
-when the two phase system is saturated

Explanation:

is known as solubility product and it is defined as when a solid and its ions in a solution are in equilibrium with each each other.

Therefore, in order to determine the of a reaction equilibrium has to be established.

Also, the two phase system has to be saturated because saturation makes the rate of dissolving equal to the rate of precipitation.

            Rate of dissolving = rate of precipitation

Therefore, this helps in the establishment of equilibrium.

Hence, we can conclude that can be determined for a system:

the answer is 1 i believe