Jawabanmu

2014-09-06T22:12:15+07:00
Diketahui: massa larutan= 100g
massa urea. = 10 g
Mr urea. = 60 g/mol
massa air. = 90 g
Mr air. = 18 g/mol
P pelarut. = 31 mmHg
ditanyakan: P larutan. = ....?

P larutan = P pelarut x X pelarut
= 31 mmHg x ( 90/18)/(10/60+90/18)
= 29,99 mmHg
2 4 2