Al(OH)3 is not colored.
Cu(OH)2, Fe(OH)2 and Fe(OH)3 are colored. Fe(OH)2 is the only one that is colored and changes color on standing because it is being oxidized to Fe(OH)3 by air. So Fe(OH) is greenish and it changes to a red/brown.
Aqueous ammonia reacts with aqueous solution of metal ion X to produce a coloured
precipitate. The colour of the precipitate changes slowly on standing in air. What could be ton
X?
A Al 3+
B Cu2+
C Fe2+
D Fe3+
Pls explain how to get the answer, thks!
2 answers
Fe)OH)2 is green and gelatinous with white streaks and changes to a red/brn.
1 answer