If a solution containing 0.10 m cl-, br-, i-, and latex: cro_4^2-c r o 4 2 − is treated with ag+, in what order will the anions precipitate? from first to last: (ksp of agcl: 1.8e-10, ksp of agbr: 5.0e-13, ksp of agi: 8.3e-17, ksp of latex: ag_2cro_4a g 2 c r o 4: 1.2e-12)

Explanation:

The first thing to have in mind is that the Ksp (constant of solubility) gives you an idea of how much soluble a salt is.  If the concentration of ions of that salt exceeds the kps, the salt will precipitate.

The Kps of all these salts are very small compared to the 0.1 M concentration of the anions so all of them will precipitate.

The smaller the constant, the faster the salt precipitates

Having that concept in mind, the order of precipitation from first to last would be:

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.