Question

what is the molarity of an aqueous solution of 50 gram of ethanol ( mol.mass= 46) in 0.5 dm3 of solution ​

Answer 1

molar mass of ethyl alcohol = 46.0g/mole

volume of solution = 500 ml

= 0.5l

molarity = mole /volume of solution

mole of ethyl alcohol = 50/46

molarity = (50/46)/ 0.5= 2.1739

molarity is 2.18