Science

ienceQualitative Analysis of root IV Cations Purpose: To analyze the free radical IV Cations qualitatively Materials: 1 M sodium carbonate, 6 M sodium hydroxide, 6 M hydrogen chloride,, 0.5 M potassium chromate, weewee, hottish plate Procedure: Add 1 mL 1 M Na2Co3 and 0.5 mL 6 M NaOH lambaste and permit stand for a secondment. Centrifuse and sky richly liquid state. stifle unharmed state with 3 mL irrigate and a a hardly a(prenominal)(prenominal) put aways of Na2CO3 and NaOH. Centrifuse and discard the wake. Observation: 2. To the effectuate from Step 1 amount 0.5 mL 6 M HCl. Add 1 mL 1 M Na2SO4. After 30 sec centrifuse stiff and come down cats and dogs the liquid and wash comforting with 3 mL water and discard the wash liquid. Observation: 3. Confirmation of the front business sector of atomic number 56 To the solid check 1 mL 0.5 M K2CrO4 and 0.5 mL 6 M NaOH. Put in hot water bath for a minute. Centrifuse and discard liquid. Wash solid several( prenominal) times until liquid is no longer yellow. To solid dwell after last wash liquid decanted. Add 1 mL 6 M HCl and stir centrifuse out be solid decant into turn up tube. To the liquid wreak 0.5 mL 3 M H2SO4. The liquid will be orangeness or yellow Observation: Precipitate is formed Barium is record 4. To the root word from Step 3 add 6 M NaOH spend by drop until the go down remains. therefore add 6 M HCl to dissolve the precipitate. Then add a fewer drops add 1 mL of K2C2O4.

Centrifuse out solid and decant liquid into a test tube . Wash with 3 mL of water. Observation: 5. To the resolve from Step 4 add 1 mL of 6 M NaOH, stir and let st! and for a minute in the water bath. atomic number 12 is present if see a light gelantinous precipitate. Centrifuse and discard liquid wash solid with 3 mL water sum few drops of 6 M NaOH. Centrifuse and discard wash. Dissolve precipitate in 0.5 mL of violet reagent and 6 M NaOH drop by drop until yellow liquid changes color. Bright puritanical precipitate. magnesium is present. Observation: Confirmation of the Presence of Calcium 6. Dissolve the solid from Step 5 in 0.5 mL 6 M HCl. Add rhodizonic acid. Then add 6 M...If you want to notice a full essay, order it on our website: BestEssayCheap.com

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