Analytical Chemistry Question 108
Question: On addition of aqueous $ NaOH $ to a salt solution, a white gelatinous precipitate is formed, which dissolves in excess alkali. The salt solution contains
[MP PMT 1994]
Options:
A) Chromium ions
B) Aluminium ions
C) Barium ions
D) Iron ions
Show Answer
Answer:
Correct Answer: B
Solution:
$ A{l^{+3}}+{{(O{H^{-}})}_3}\to \underset{\text{(white ppt}\text{.)}}{\mathop{Al{{(OH)}_3}}} $ which is soluble in excess alkali.
BETA
