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Usually such reactions involves complexation. Ammonia is a strong field ligand, it easily forms complexes with most metal cations, except a few
like aluminium. The result follows.
I think the same, the answer is 2. Beacuse The reaction of alumunium with amonia cant form a complex, altough amonia is a good ligant. Because the reaction just form Al(OH)2, who have a low solubility in the more reagent. While the ions of the other metals, if they reacted with a little of ammonia, they'll precipitate to form Ag2O, Zn(OH)2, Cu(OH)2. But they are can soluble with more ammonia, which each form their complex compound, like avineil jain was told. Sorry i cant give my expalanation well, i have the bad english.
Al(OH)3 is insoluble, because aqueous ammonia creates the conditions for it to precipitate. At lower pH it will be dissolved as Al3+.6H2O, at higher pH it will be dissolved as Al(OH)6(3-).
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Top NewestAccording to me, the answer should be (2), as all the other metal cations form complexes.
Silver forms [Ag(NH3)2]+1
Copper forms [Cu(NH3)4]+2
Zinc forms [Zn(NH3)4]+2
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ELI5: What is a complex?
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A complex is a coordination compound formed by ligands and a central metal atom. You can further study it on wiki
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Usually such reactions involves complexation. Ammonia is a strong field ligand, it easily forms complexes with most metal cations, except a few like aluminium. The result follows.
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All metals can form complexes and Al can't so it's 2
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when Al (OH)3 react with NH4OH it precipitates as the solubility of Al (OH)3 is less in NH4OH than in water
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I think the same, the answer is 2. Beacuse The reaction of alumunium with amonia cant form a complex, altough amonia is a good ligant. Because the reaction just form Al(OH)2, who have a low solubility in the more reagent. While the ions of the other metals, if they reacted with a little of ammonia, they'll precipitate to form Ag2O, Zn(OH)2, Cu(OH)2. But they are can soluble with more ammonia, which each form their complex compound, like avineil jain was told. Sorry i cant give my expalanation well, i have the bad english.
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the answer is (2),AL(OH)3
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I think its 2 Al(OH)³
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Answer is 2 becoz 1 and 3 can form complex salts with aqueous ammonia and 4 is hydroxide of an amphoteric metal. So all that is left is 2
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ANS:- 2 THIS IS THE ULTIMATE ANSWER AS I HAVE POSTED THIS.
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As told by Avineil Jain I was also thinking the that same concept
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1
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The answer is 2
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except aluminium all others are d- block elements. they can form complexes. p - block element Al cannot form
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answer is 2
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twoooo.cause Al cant form complex ones.
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Answer is 2
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The answer is 2 because all others can form complexes
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3
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Ans is 2
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Answer is no. 2
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Al(OH)3
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Yaa its answer 2
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Al(OH)3 is insoluble, because aqueous ammonia creates the conditions for it to precipitate. At lower pH it will be dissolved as Al3+.6H2O, at higher pH it will be dissolved as Al(OH)6(3-).
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I think it is 1st option
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2) Al(OH)3 is insoluble in aqueous ammonia
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Al(OH)3
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Al(OH)3 doesn't form a complex in ammonia, so it should be 2. The rest react with ammonia.
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Aloh3
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2 is the answer
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Its Al(OH)3 because it will form precipitation.
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The answer is 2, because it can't form complexes with Aluminium.
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The answer is 2 because all others can form complex
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Option (2)
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The answer is AgCl
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Because all others are already in aqueous form as hydroxide is already there
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according to me ans should be 1 all three have oh- ions
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Al(oh)2
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it is Al(OH)3 becoz it will not make complex compound with ammonia. other do as Ag(NH3)2Cl, Cu(NH3)4(OH)2,Zn(NH3)4(OH)2
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2
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4
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I think that ans is 2 bcoz all other are made from complexes
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Agcl
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I thing (2) answer because other makes them complex.
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a, Agcl is insoluble to ammonia, AgCl is a metallic salt.
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a)
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its 4th option
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AgCl2
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