Question

Name any two colored basic radicals

Answer 1

Explanation:

Give examples of some coloured basic radicals. Ans.Cu2+,Fe2+, Fe3+, Cr3+, Ni2+, Co2+ and Mn2+.

Answer 2

1. Aluminum Al3+  

Al2(SO4)3 + 6 NH4OH→ 3(NH4)2SO4 + 2Al (OH)3 .

White thick ppt. of Aluminum hydroxide dissolvable In dil Acids and in Caustic pop.  

Salt arrangement + sodium hydroxide arrangement → white thick ppt. of Aluminum hydroxide dissolvable in abundance sodium hydroxide shaping sodium meta aluminate.  

Al2(SO4)3 + 6 NaOH → 3 Na2SO4 + 2 Al (OH)3  

Al (OH)3 + NaOH → NaAlO2 + 2 H2O  

2. Iron (II) Fe2+  

FeSO4 + 2NH4OH → (NH4)2SO4 + Fe (OH)2  

White ppt. turns white green when it presented to air and solvent in acids.  

Salt arrangement + sodium hydroxide arrangement → white green ppt. of iron (II) hydroxide is shaped.  

FeSO4 + 2 NaOH → Na2SO4 + Fe (OH)2.