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Which one of the following metallic hydroxides does not dissolve in sodium hydroxide solution?
  • a)
    Al(OH)₃
  • b)
    Pb(OH)₂
  • c)
    Fe(OH)₃
  • d)
    Zn(OH)₂
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Which one of the following metallic hydroxides does not dissolve in so...
Explanation:
When a metallic hydroxide dissolves in sodium hydroxide solution, it forms a soluble sodium salt and water. However, some metallic hydroxides are not soluble in sodium hydroxide solution due to their low solubility or insolubility.

Fe(OH)₃ is one such metallic hydroxide that does not dissolve in sodium hydroxide solution. This is because Fe(OH)₃ has a very low solubility in water and in alkali solutions.

Other metallic hydroxides such as Al(OH)₃, Pb(OH)₂ and Zn(OH)₂ are soluble in sodium hydroxide solution. Al(OH)₃ and Zn(OH)₂ form soluble sodium salts and water, while Pb(OH)₂ forms an insoluble precipitate of lead(II) hydroxide.

In summary, the solubility of metallic hydroxides in sodium hydroxide solution depends on the specific properties of the hydroxide and its interaction with the alkali solution.
Community Answer
Which one of the following metallic hydroxides does not dissolve in so...
Fe(OH)3 does not dissolve in NaOH(aq). All other hydroxides are amphoteric in nature and dissolve in NaOH.
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Which one of the following metallic hydroxides does not dissolve in sodium hydroxide solution?a)Al(OH)₃b)Pb(OH)₂c)Fe(OH)₃d)Zn(OH)₂Correct answer is option 'C'. Can you explain this answer?
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