To a concentrated buffer of pH 4.0 is added an equal volume of an aqueous solution that is 0.020 M in Cr3+,Cd2+ and Al3+.The expected precipitate would consist of ________.
A) Al(OH) 3
B) Al(OH) 3 and Cr(OH) 3
C) Cd(OH) 2
D) Cd(OH) 2 and Cr(OH) 3
E) Cd(OH) 2,Cr(OH) 3 and Al(OH) 3
Correct Answer:
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