Question

Calculate the concentration of a solution, which contains 2.5g of salt dissolved in 50g of water.chemistry 2nd chapter

Answer 1

in 50g water 2.5g salt dissolve

in 1g----------------2.5/50g----------

in 1000g ----------------(2.5/50)*1000g=50g--------

NOW CONCENTRATION IS 50/M molal where M=molecular weight of salt