Answer to Question #68467 in General Chemistry for Hibah

Question

Into how much water should you dissolve 80.0 g ethylene glycol in order to obtain a solution with a concentration of 4.9 m?

Answer 1

M((CH2OH)2)=62 g/mol
n((CH2OH)2)=m/M=80/62=1.29 mol

c=n/V

4.9 M = 1.29 mol / x L ---> x=1.29/4.9=0.26 L

V(H2O)=0.26 L = 260 ml