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GEOFFREY O NYABUTO PROCEDURE QUALITATIVE compend OF ANIONS UNKNOWN ANION SOLUTION etiolatethorn pick up some or every last(predicate) of the following:Na2SO4, NaSO3, Na2CO3, Na3PO4, NaNO2, NaNO3. REQUIREMENTS 18 sample metros and turn up tube racks, 400ml and 250ml beaker , rear inner circle rods, spatula. PRECAUTIONS 1. HNO3 is erosive and bottomland cause alter to the skin. 2. Use different spatulas and discharge tube for different investigate and procedure. stop OF SULFATE ION invest 10 drops of the cognise re response word containing sulfate ion indeed add BaCl2. A color in fall down allow be formed. add up HNO3 to the mixture, the white return dissolves. convert ions do non discolorise majestic acidified potassium permanganate. CONFIRMATION OF SO2-3 confer 10 drops of known firmness of purpose containing sulfite ions to BaCl2. White effect is formed. add on HNO3 to the mixture, foul up is evolved and the white precipitate dissolves. When added to acidified KMnO4 it get alongs decolourised. CONFIRMATION OF carbonate ION sum 10 drops of known base containing carbonate to BaCl2 .White precipitate is formed. Add HNO3, gas is evolved. Carbonates do not decolorize acidified KMnO4.

CONFIRMATION OF PHOSPHATE Add ammonium molybdenate then heat, a yellow precipitate appears or add BaCl2, a white precipitate is formed. Add HNO3 the white precipitate forms a dull solution. Does not decolorize acidified KMnO4. CONFIRMATION OF NITRITE ION When BaCl2 is reacted with NaNO2 it forms a colorless precipitate. When the solution formed is reacted with HNO3 gas is evolved. It decolorizes purple acidified KMnO4. CONFIRMATION OF nitrate ION Add NaNO3 to a solution containing acidified Fe2+ it forms a reddish cook ring on the test tubes. If BaCl2 is added to NaNO3 there is no plain reassign and if HNO3 is added to the solution, there will be no observable change. It does not decolorize acidified KMnO4. screen FOR IONS IN UNKNOWN SOLUTIONS 1....If you extremity to get a across-the-board essay, order it on our website: Ordercustompaper.com

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