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2- A 0.5664 g ore sample is dissolved in nitric acid and then filtered. The aluminum is present in solution as Al³+. The
Posted: Wed Jul 06, 2022 11:06 am
by answerhappygod
- 2 A 0 5664 G Ore Sample Is Dissolved In Nitric Acid And Then Filtered The Aluminum Is Present In Solution As Al The 1 (26.24 KiB) Viewed 22 times
2- A 0.5664 g ore sample is dissolved in nitric acid and then filtered. The aluminum is present in solution as Al³+. The solution is made basic with ammonium hydroxide, NH4OH, and the aluminum hydroxide, Al(OH)3 (FW 78.004), precipitates. This gel is filtered in a porous glass crucible, rinsed with dilute ammonium hydroxide, ignited, cooled in a desiccator, and weighed. The resulting alumina, Al2O3 (FW 101.94), weighed 0.1605 g. Calculate the weight percent Al (FW 26.9815) in the sample. 2 Al(OH) Al₂O3 + 3H₂O 0.1605 g. (14.99%)