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GEOFFREY O NYABUTO PROCEDURE QUALITATIVE ANALYSIS OF ANIONS UNKNOWN ANION dissolver etiolatethorn contain some or all of the following:Na2SO4, NaSO3, Na2CO3, Na3PO4, NaNO2, NaNO3. REQUIREMENTS 18 test metros and test tube racks, 400ml and 250ml beaker , stir inner rung rods, spatula. PRECAUTIONS 1. HNO3 is corrosive and bottomland cause damage to the skin. 2. Use distinct spatulas and test tube for different experiment and procedure. chit OF convert ION Place 10 drops of the known root word containing sulfate ion then add BaCl2. A discolour fall toss off will be formed. add up HNO3 to the mixture, the whiteness go down dissolves. Sulfate ions do non discolor imperial acidified potassium permanganate. hinderance OF SO2-3 join on 10 drops of known resolving containing sulfite ions to BaCl2. White flow is formed. Add HNO3 to the mixture, gas is evolved and the white precipitate dissolves. When added to acidified KMnO4 it exhaust alongs decolourised. CONFIRMATION OF CARBONATE ION Add 10 drops of known base containing carbonate to BaCl2 .White precipitate is formed. Add HNO3, gas is evolved. Carbonates do non 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 weighted base. Does not decolorize acidified KMnO4. CONFIRMATION OF NITRITE ION When BaCl2 is reacted with NaNO2 it forms a colorless precipitate. When the so lution formed is reacted with HNO3 gas is ev! olved. It decolorizes purple acidified KMnO4. CONFIRMATION OF NITRATE ION Add NaNO3 to a solution containing acidified Fe2+ it forms a reddish brown echo on the test tubes. If BaCl2 is added to NaNO3 there is no observable assign and if HNO3 is added to the solution, there will be no observable change. It does not decolorize acidified KMnO4. TEST FOR IONS IN UNKNOWN SOLUTIONS 1....If you want to get a full essay, order it on our website: BestEssayCheap.com

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