3 gr urea mr 60 dilarutkan dlm 90 gr air hitunglah fraksimol urea

mt = 3 gr
Mr t = 60
nt = 3/60 = 0,05 mol
p = 90 gr
Mr p = 14
np = 90/14 = 6,42 mol

Xt =...?

Xt = nt ÷ (nt+np)
Xt = 0,05 ÷ (0,05+6,42)
Xt = 0,007


- Oswyth -