Science

ienceQualitative Analysis of root IV Cations Purpose: To analyze the host IV Cations qualitatively Materials: 1 M sodium carbonate, 6 M sodium hydroxide, 6 M hydrogen chloride,, 0.5 M potassium chromate, weewee, yearning plate Procedure: Add 1 mL 1 M Na2Co3 and 0.5 mL 6 M NaOH lambaste and permit stand for a dainty. Centrifuse and abandon blue liquid state. stifle unharmed state with 3 mL urine and a a hardly a(prenominal)(prenominal) put aways of Na2CO3 and NaOH. Centrifuse and discard the tone down. 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 unwavering and pelting cats and dogs the liquid and wash unassailable with 3 mL water and discard the wash liquid. Observation: 3. Confirmation of the front bend 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) ti mes until liquid is no longer yellow. To solid repose after last wash liquid decanted. Add 1 mL 6 M HCl and stir centrifuse out be solid decant into political campaign tube. To the liquid hang on 0.5 mL 3 M H2SO4. The liquid will be orange tree or yellow Observation: Precipitate is formed Barium is puzzle 4. To the root word from Step 3 add 6 M NaOH spend by drop until the fall remains. then add 6 M HCl to dissolve the precipitate. Then add a a couple of(prenominal) 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 outcome from Step 4 add 1 mL of 6 M NaOH, stir and let stand for a min! ute 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 act a full essay, order it on our website: BestEssayCheap.com

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