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Identify the correct statement (s) with respect to the following reaction. 2Na[Al(OH)_(4)]_((aq)) + CO_(2(g)) rarr Al_(2)O_(3).xH_(2)O_((s)) + 2NaHCO_(3(aq)) (i) CO_(2) is acting as a reducing agent. (ii) The solution is neutralised by passing CO_(2) gas to form hydrates Al_(2)O_(3) precipitate. (iii) Insoluble sulphate is converted into soluble sulphate. (iv). The precipitate is filtered off and heated around 1670 K to get pure Alumina. |
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Answer» only ii |
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