Question

Predict whether the compounds are soluble or insoluble in water. 

Answer 1

Following is the - complete Answer -&- Explanation; for the given: Question: in...typed format...

$\Rightarrow$Answer:

Following is the complete: Answer: in...a tabular format...as given below:

Names of Salts	Soluble in Water	Insoluble in Water
1. CuBr2( copper(II)bromide)	YES..soluble
2. CuCO3( cupric carbonate )		Yes, Insoluble.
3. AgBr ( silver bromide )		Yes, Insoluble.
4. BaSO4( barium sulfate )		Yes, Insoluble
5. NH4Br ( ammonium bromide )	Yes, soluble
6. Pb(NO3)2( Lead (II) Nitrate )	Yes, soluble

$\Rightarrow$Explanation:

Following is the complete Explanation: for the above: Answers.

$\Rightarrow$ Since copper (II) bromide(CuBr₂) dissociates into ions in its aqueous solution, it is soluble in water.

$\Rightarrow$Since, copper (II) carbonate ( CuCO₃) , has more lattice energy than hydration energy: it is insoluble in water.

$\Rightarrow$ Since, we know: all silver halides: are insoluble in water: due to low: electronegativity difference: between the Ag⁺  and the Br ^-  ions. The ionic radius of the silver and bromide ions, being very much similar to each other, they come very close to each other, and form the ionic bonds, between each other, the ionic bonds become very strong, and therefore, it becomes very difficult to separate them. Thus, silver bromide: becomes insoluble in water.

$\Rightarrow$ Since, barium sulfate ( BaSO₄) ions have similar sizes; the force of attraction between the ions, is very weak, and therefore they don't form a very strong ionic bond, and consequently, they have lower hydration energy: and they possess: higher lattice energy: thus, the molecules become almost, insoluble in water.

$\Rightarrow$Since, ammonium bromide ( NH₄Br ) is an ionic compound, it easily dissociates into ions, in its aqueous solution: it becomes : soluble in water.

$\Rightarrow$ If we look at a standard: solubility chart: we will get to see: that Pb²⁺  and NO₃ ^-  ions form the salt: Pb(NO₃)₂, which being ionic is soluble in water.

​​​​​​​