Identify the correct order of solubility in aqueous medium
CuS> ZnS> Na2S
ZnS > Na2S> CuS
Na2S> CuS> ZnS
Na2S> CuS> ZnS
D.
Na2S> CuS> ZnS
Ionic compounds are more soluble in water or in an aqueous medium.
Ionic character Size of cation (if cation is same)
The order os size of cation is
Na+> Zn2+>Cu2+
therefore,
The order of ionic character and hence, of solubility in water is as
Which of the following statements is not valid for oxoacids of phosphorus?
Orthophosphoric acid is used in the manufacture of triple superphosphate
All oxoacids contain tetrahedral four coordinated phosphorus
All oxoacids contain tetrahedral four coordinated phosphorus
In Which of the following arrangement, the given sequence is not strictly according to the property indicated against it ?
HF < HCl< HBr < HI : increasing acidic strength
H2O < H2S < H2Se < H2Te : increasing pKa values.
NH3 < PH3 < AsH3 < SbH3 : increasing acidic character
NH3 < PH3 < AsH3 < SbH3 : increasing acidic character
The stability of +1 oxidation state among Al, Ga, In and TI increases in the sequence
Ga<In< Al<Tl
Al<Ga<In<Tl
Tl<In<Ga<Al
Tl<In<Ga<Al
The variation of the boiling point of the hydrogen halides in the order HF > HI > HBr > HCl. What explains the higher boiling point of hydrogen fluoride?
The electronegativity of fluorine is much higher than for other elements in the group
There is strong hydrogen bonding between HF molecules
The bond energy of HF molecules is greater than in other hydrogens halides
The bond energy of HF molecules is greater than in other hydrogens halides