* What is this substance This substance is iodide Confidence Report The aim of extraction, is to separate a part of raw material, using a solvent such as water with heat. A tincture of iodine is a common medicine sold in many pharmacies, used as an antiseptic on cuts of the skin. The objective of the seaweed lab, is to produce a tincture of iodine by extracting Iodide and other components (seen when a mixture of iodine is present), from seaweed. We
One method for preparing baking soda is through reacting crystalline ammonium hydrogen carbonate with brine according to the following equation: NH4HCO3(s) + NaCl (aq) --> NaHCO3(aq) +NH4Cl(aq) Eq. 1 Brine contains sodium chloride, the compound needed to make baking soda, as well as potassium chloride, lithium chloride, and calcium chloride. Once the reaction has been completed, the solid baking soda is filtered off, but some contaminants may be present in the solid. The first step in determining the purity of the sample is to perform thermal gravimetric analysis (Experiment 7) on the baking soda sample to determine the percent composition of sodium bicarbonate in the sample. A sample of the baking soda will be heated until it decomposes to leave solid sodium carbonate according to the following equation: 2NaHCO3(s) --> Na2CO3(s) + CO2(g) + H2O(g) Eq.
When an ionic or polar compound enters water, it is surrounded by water molecules Salt or Sodium Chloride Salt is a mineral that is composed primarily of sodium chloride (NaCl), a chemical compound belonging to the larger class of ionic salts. So when an ionic substance (salt) dissolves in water, it is broken up into individual ions which are surrounded by water molecules. Baking soda Sodium bicarbonate or sodium hydrogen carbonate, known as Baking Soda, is the chemical compound with the formula Na HCO3. Sodium bicarbonate is a white solid that is crystalline but often appears as a fine
There are several different ways to create baking soda, but the Athenium Baking Soda Company chose to make baking soda by reacting ammonium hydrogen carbonate with a highly concentrated aqueous solution of NaCl or brine. An equation to demonstrate this process is: NH4HCO3(S) + NaCl (aq) → NaHCO3 (aq) +NH4Cl(aq) This salt-water concentration not only contains a high concentration of sodium chloride, but also concentrations of calcium chloride, potassium chloride, and lithium chloride. Because of this fact residue of NH4HCO3 will possibly contain CaCl2, KCl, and LiCl. These contaminants of the brine will provide flaws to the baking soda, and thus production must be checked often by chemists who analyze the baking soda for lifespan, composition, purity, and quality. There are a couple different ways to determine the percent composition of baking soda.
We added anhydrous Sodium Sulfate as a drying agent. To complete, we distilled the cyclohexene and collected the product. Knowing this data, we determined the yield % which is 58.5%. This experiment features the dehydration of cyclohexanol and produce cyclohexene. The acid catalyzed dehydration of cyclohexanol with distillative removal of the resulting cyclohexene from the reaction mixture
Because baking soda is a natural compound, using it in these products can replace potentially environmentally harmful products. Out of several methods to produce baking soda, the Athenium Baking Soda Company has chosen the method of reacting brine with ammonium hydrogen carbonate to form baking soda: NH4HCO3(s) + NaCl(aq) => NaHCO3(aq) + NH4Cl(aq) Brine is defined as water containing a higher concentration of sodium chloride than typical seawater, along with the possible impurities potassium chloride (KCl), lithium chloride (LiCl), and calcium chloride (CaCl2) (brinechem). After NaHCO3 is dried and filtered, it may contain contaminants (KCl, LiCl, CaCl2) in the residue. To ensure the standards of the products are kept high, many baking soda manufacturing companies employ technicians and scientists to analyze and approve the products. This analysis is commonly referred to as quality control and includes periodic inspections designed to ensure the company’s products are meeting the set standards such as being uncontaminated, not losing quality during the manufacturing process, and not containing chemical structure or composition imperfections.
White precipitate shows the presence of chloride (Cl-). Chloride anion equation: HCl(aq) + AgNO3 (aq) → HNO3 (aq) + AgCl(s). The nitrate anion test involves cooling a mixture containing 1 mL of test solution and 3mL 18M H2SO4. 2mL is poured down the inner test tube side and the presence of a brown ring shows nitrate (NO3-) to be present. The carbonate anion test mixes 1 mL of test solution and drops of 6M HCl.
Dissolving is the process in which the molecules interact and attract each other to form a solution. So in this case the baking soda, salt, or the sugar beginning to attract with the vinegar then it starts to dissolve. An dissolving also depends on the molecules of the substances (salt, sugar, baking soda) doing the dissolving is called the solvent. An the molecules of the substances being dissolved (vinegar) are called the solute. The extent to which a substance dissolves is a characteristics property of the substance is called the solubility.
h) A way to make hard water softer is to put an sodium nitrate and create a precipitate to mellow out the reaction. Another way of making it softer is by removing the calcium ions one way of doing that is by boiling the solution to take out some of the ions. Conclusion: Overall, we determined that sodium carbonate, Na2CO3, is the anion that can be used to precipitate the most metal cations. Also, we learned that the anion sodium chloride, NaCl, could be used to remove silver ions from solutions. The stuff that I found interesting was that how many colours you can get when you mix the cations and anions
The different kinds of Aspirin tablets are: * Enteric Coated Tablets * Capsules * Regular Tablets * Dissolving Tablets. Each tablet will be dissolves in both Water and Hydrochloric Acid (representing saliva and stomach acid respectively). Hypothesis The Enteric Coated tablet will remain undissolved in both water and Hydrochloric Acid as the coating is designed to remain undissolved until reaching the small intestine. The dissolving tablet will dissolve the fastest in both water and Hydrochloric Acid as this tablet is designed to quickly dissolve in liquid. The capsule will soften but not completely dissolve in the water, however will dissolve in the Hydrochloric Acid.