Question

11 words <> Question 12 1 pts Why was CaCl2 used and not NaCl in the preparation of macrocapsule? Addition of NaCl instead of CaCl, leads to the formation of alternating co-polymer and not block copolymer NaCl is solid while CaCl2 is liquid. Thus, the reaction between liquid sodium alginate and CaCl, is fast Ca2+ ion is divalent ion which can effectively form the crossed linked polymer The atomic radius of Ca2+ is smaller then the ionic radius of Nat, hence, CaCl2 can be readily encapsulated Cation is heavier than Nation thus forming cross-linked polymer 2 pts Question 13

why was CaCl2 used and not NaCl in the preperation of the macrocapsule?

Answer 1

Ca2+ ion is divalent ion which can effectively form the cross linked polymer that why CaCl2 is prefered over the monovalent NaCl.