root, resolution, result, answer, solve, remedy, approach, problem, workaround, strategy, more...

problem, complication, issue, obstacle, challenge

dissolution, precipitation, distillation, filtration, evaporation, crystallization, oxidation, reduction, more...

only, saturated, best, dilute, aqueous, optimal, final, standard, solid, possible, acid

way forward,   the key,   the answer,   answer to a problem,   solving a problem,   correct answer,   an answer,   finding ways,   the key to,   final answer