Question

The solubility product of Fe(OH)3 is 1.1 10-36. What is the solubility of

Fe(OH)3 in moles per litre and grams per litre.​

Answer 1

Answer

             Fe(OH)  

3

​  

=Fe  

3+

+3OH  

⊝

 

∴[Fe  

3+

][OH  

−

]  

3

=K  

sp

​  

 of Fe(OH)  

3

​  

=1×10  

−36

 

⇒[OH  

⊝

]  

3

=  

0.001

1×10  

−36

 

​  

 

⇒[OH  

⊝

]=(10  

−33

)  

Y  

3

​  

 

=10  

−11

M

∴ The minimum concentration of OH  

⊝

 will be 10  

−11