it was necessary for separation techniques and methods of chemical analysis to be developed before the laws of definite composition and multiple proportions could be formulated because the compounds need to be in pure form.
separation techniques separate pure substances from crude sample or impure substances. many of the separation techniques like evaporation, crystallization and distillation results pure compound after the process. it was necessary before the laws of definite composition and multiple proportions could be formulated because if impurities present it would affect the results and show false composition and proportion of elements in the compound.
To learn more about Separation:
https://brainly.com/question/14482995
#SPJ4
