Table 5: Solubility of Zr(IV) tungstovanadate in various solvents (0.5 g of the material was initially taken for the treatment).

SolutionWt. after treatment (g)IEC for Na+ (meq/g)

Acids
 0.1 M HCl0.52.5
 0.5 M HCl0.52.5
 2 M HCl0.52.5
 5 M HCl0.482.1
 HNO30.21.5
 H2SO40.321.9
Organic solvents
 Benzene0.52.5
 Heptane0.52.5
 Acetone0.52.5
 Isopropanol0.52.5
 Diethyl ether0.52.5
Bases
 1 M KOH0.451.92
 1 M NaOH0.41.8