AI(OH)_(2)darr ("white")+ OH^(-) rarr [AI(OH)_(4)]^(-) (soluble complex) White precipitate of AI(OH)_(3) reappears when:

AI(OH)_(2)darr ("white")+ OH^(-) rarr [AI(OH)_(4)]^(-) (soluble comple

1.	AI(OH)_(2)darr ("white")+ OH^(-) rarr [AI(OH)_(4)]^(-) (soluble complex) White precipitate of AI(OH)_(3) reappears when:
Answer» <html><body><p>a solution of <a href="https://interviewquestions.tuteehub.com/tag/ammonium-859347" style="font-weight:bold;" target="_blank" title="Click to know more about AMMONIUM">AMMONIUM</a> chloride is added<br/>a solution of ammonia is added<br/>concentrated `HNO_(3)` is added in excess<br/>all of the above</p>Solution :`NH_(<a href="https://interviewquestions.tuteehub.com/tag/4-311707" style="font-weight:bold;" target="_blank" title="Click to know more about 4">4</a>)^(+)AI(OH)_(4)^(-) rarr NH_(4)OH + AI(OH)_(3)darr`<br/> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/GRB_ORG_CHM_V01_QB_C07_E01_640_S01.png" width="80%"/><br/> (Alizarin red S) `rarr` Red ppt. or <a href="https://interviewquestions.tuteehub.com/tag/lake-1065675" style="font-weight:bold;" target="_blank" title="Click to know more about LAKE">LAKE</a> in ammonical solution.</body></html>