myself also predicted, .However, in precipitating agent such NaOH was added, it allow Al(OH)-RES-complex +Sodium nitrate(BY Product) .Will sodium nitrate dissolve or precipitate?
After centrifuge, i found some gel precipitated and clear supernatant was collected separately.Hence questioned whether it is complex or sodium nitrate.
Hi Parasuraman Sheela, I'm not sure if a stable aluminum resorcinol complex will form under these conditions. Most likely, the gel-like precipitate is Al(OH)3. What I can say for sure is that the precipitate cannot be sodium nitrate, as NaNO3 is very soluble in water.