A) \[\text{CuS}\,\text{}\,\text{Zn}\,\text{}\,\text{N}{{\text{a}}_{\text{2}}}\text{S}\]
B) \[\text{ZnS}\,\text{}\,\text{N}{{\text{a}}_{\text{2}}}\text{S}\,\,\text{}\,\text{CuS}\]
C) \[\,\text{N}{{\text{a}}_{\text{2}}}\text{S}\,\,\text{}\,\text{CuS}\,\text{ZnS}\]
D) \[\,\text{N}{{\text{a}}_{\text{2}}}\text{S}\,\,\text{}\,\text{ZnS}\,\text{}\,\text{CuS}\]
Correct Answer: D
Solution :
Ionic compounds are more soluble in water or in aqueous medium. Ionic character \[\propto \] size of cation (if anion is same) The order of size of cation is \[N{{a}^{+}}>Z{{n}^{2+}}>C{{u}^{2+}}\] \[\therefore \]The order of ionic character and hence, of solubility in water is as\[N{{a}_{2}}S>ZnS>CuS\]
You need to login to perform this action.
You will be redirected in
3 sec
