pi = i*MRT.
i is the van't Hoff factor which "counts" the number of particles. For
CaCl2, it ionizes to Ca^+2 + 2Cl^- or three particles. NaCl ionizes NaCl ==> Na^+ + Cl^- or two particles. Since R and T are not given, we can call them K.
pi = 3*2K
pi = 2*2K.
For which is pi greater?
Which solution has the higher osmotic pressure, 2 M NaCl or 2 M CaCl2?
1 answer
1 answer