1 L acetilena => m/M = V/Vm
M.C2H2= 26 g/mol, Vm = vol. molar = 22,4 L
=> m = VxM/Vm = 1x26/22,4 = 1,161 g acetilena
1 volum apa = 1000 g apa
=> md = 1,161 g acetilena
ms = md+m.apa= 1001,161 g sol.
=> c% = mdx100/ms = 1,161x100/1001,161 = 0,116%
Cm = md/MxVs, Vs = V.apa = 1 L
= 1,161/26x1 = 0,044 M
=> c.