Question

Which one of the following metalic hydroxides does not dissolve in sodium hydroxide solution.

• A. $Zn(OH)_{2}$
• B. $Al(OH)_{3}$
• C. $Fe(OH)_{3}$
• D. $Pb(OH)_{2}$

Answer 1

Answer: (C)

$Fe(OH)_{3}$

Answer 2

$Fe(OH)_{3}$ is soluble in sodium hydroxide solution.