Question

Determine which of the given salt solutions would have greater ion-pair formation and indicate the reason for your selection?

Salts	Greater Ion-Pair Formation	Reason
1.0 M NaCl vs. 1.0 M MgCl2
0.05 M LiF vs. 0.05 M KBr
1.5 M KNO3 vs. 0.0001 M CaSO4
0.25 M BaCl2 vs 0.25 M Na2S

Answer 1

As the concentration of solution increases, the number of ions will also increase. out of the 4 pair given, 1st one is having the higher concentration of 2 Molar.

In 1.0 M NaCl vs. 1.0 M MgCl₂, Cl^- ion will be higher, because Cl- coming from both NaCl and MgCl₂ .

In 0.05 M LiF vs. 0.05 M KBr, both of them will be in same in proportion, LiF + KBr----->LiBr + KF , because both are in equal quantity.

The concentration of KNO3 is more in the 3rd one, 1.5 M. It will form K₂SO₄ and Ca(NO₃)₂.

in the 4th one, BaCl₂ + Na₂S ------> BaS + 2 NaCl, So Na+ and Cl- will be in higher concentration. Because 2 molecules of NaCl fromed formed the reaction.