A semipermeable membrane separates two aqueous solutions at 20 ∘ C. For each of the cases, determine the direction, if any, of the net flow of water. Assume 100% dissociation for electrolytes, meaning ion pairing can be ignored. Assume 100% dissociation for electrolytes.

Solution A: 0.10M NaCl(aq) Solution B: 0.10M KBr (aq)
Solution A: 0.10M Al(NO3)3 solution B: 0.20M NaNO3
Solution A: 0.10M CaCl2 Solution B: 0.50M CaCl2

Which group has a:

a. net flow towards solution A
b. net flow towards solution B
c. no net flow.