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Chemistry
Aqueous ammonia is used as a precipitating reagent for Al3+ ions as Al(OH)3 rather than aqueous NaOH, because
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Q. Aqueous ammonia is used as a precipitating reagent for Al
3
+
ions as Al(OH)
3
rather than aqueous NaOH, because
NTA Abhyas
NTA Abhyas 2020
The p-Block Elements - Part2
A
$\text{NH}_{4}^{+}$ is a weak base
0%
B
$\text{NaOH}$ is a very strong base
0%
C
$NaOH$ forms $[Al(OH)_4]^-$ ions
100%
D
$\text{NaOH}$ forms $\left[\mathrm{Al}(\mathrm{OH})_2\right]^{+}$ ions.
0%
Solution:
Al(OH)
3
formed with NaOH dissolves in excess of NaOH to form aluminate ion.
which is stable.
