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Trisheena Harricharran 4/1/13 Miguel Perez Chem 106 Sec 006 Observations Materials: * Barium Iodide- White and powdery * Zinc Sulfate- White and powdery * Boiling Chips- Tiny‚ grey and rock like Experimental Observations: Barium Iodide used- .63g Zinc Sulfate used- .45g Boling Tube with 2 boiling chips- 41.52g Barium Iodide in solution with 2 mL of deionized water looks cloudy. Zinc Sulfate in solution with 2 mL of deionized water is clear. Barium Iodide
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In the experiment‚ synthesis of copper compounds‚ the purpose was to recover the original amount of copper after series of chemical reactions. Then returning the copper back to its original form. The copper wire originally weighted 1.0099 g‚ but after the copper was transformed into Cu(OH)2 to CuO to CuSO4 and finally into Cu‚ the mass of the recovered copper was 1.1023g; the percent yield was 109%. Since the percent yield is more than 100%‚ an error must have occurred somewhere in the lab. A possible
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Jamie Milano Biology 150 Photosynthesis Homework April 8‚ 2013 Reviewing Your Knowledge 2. A pigment solution contains compound A with 4 polar groups and compound B with 2 polar groups. You plan to separate these compounds using paper chromatography with a non-polar solvent. Predict the location of the two bands relative to the solvent front. Explain your answer. Since compound A is probably more polar than compound B‚ compound B will move further in the chromatography. Since the solvent is non-polar
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a substance that conducts an electric current when dissolved in water is called an electrolyte a non-electrolyte is a substance that does not conduct an electric current in aqueous solution NH4+‚ NO3-‚ and group 1A cations are ions that always form soluble ionic compounds a precipitation reaction is a reaction in which two or more water-soluble ionic compounds react in aqueous solution to form one or more insoluble precipitates. a precipitate is a solid that separates from a solution a species
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Purpose: The purpose of this experiment is to determine the number of moles of water molecules of crystallization of a sample of hydrated Barium Chloride. This can be calculated using Gravimetric Analysis and to indirectly determine the percent composition of a hydrate by taking advantage of its chemical properties. Introduction: Gravimetric procedures are analytical methods in which the results are determined from the masses of starting materials and products. These methods
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In the prac‚ the aim was to determine which combinations of each solutions created precipitate and which did not. The prac proved to work in achieving this for most examples‚ although few were anomalous and did not give sound results. Take for instance‚ barium chloride and silver nitrate shown in the discussion. The result shown was cloudy and appeared to have precipitated where in actuality it should not have. It is also good to note that some instances of a precipitate not forming visibly may be
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Determination of the Solubility Product Constant of Calcium Hydroxide Austin Raniel Tan Institute of Chemistry‚ College of Science‚ University of the Philippines‚ Diliman‚ Quezon City 1101 Philippines ------------------------------------------------- Christian Tica‚ Ryan Tabernilla‚ Michael Siao‚ Ron Mabunga‚ Jaime Olivares‚ and rest of Team Pogi Abstract ------------------------------------------------- By measuring the concentration of the hydroxide ion from a solution saturated with
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Introduction For this experiment‚ we are going to determine the effect of temperature on solubility‚ to be done in a chemical by dissolving a solute in a definite amount of solution which is saturated. Specifically‚ the goal of this experiment is to prepare a saturated solution of Na2C2O4 in water at different temperatures‚ determine the effect of temperature in solubility‚ and to apply Le Chatelier’s Principle. We can do all this by simply titrating a certain amount of standard KMnO4‚ and measuring
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usage in treating different diseases Lab 2: Identification and Organoleptic characterization of some Inorganic drugs Part 1: Identification of Inorganic drugs by physical appearance Part 2: Identification of Inorganic drugs by variability in solubility Lab 3: Qualitative analysis of Acid Radicals present in drugs and dosage form Part 1: Examples of Drugs and dosage forms having acid radicals Part 2: How to analyze bromide‚ chloride‚ nitrate‚ carbonate and sulfate radicals Lab 4: Qualitative
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