Weak base

Acid-base chemistry can be used to separate the components of a mixture, if one or more of those components are acidic or basic, based on the solubility of that mixture. Solubility is the ability of a solute to dissolve in a solvent and it’ll usually form a solution. An extraction is when compounds are dissolved from a solid into a solvent or from a solution into another solvent. Solvent-solvent is when nonaqueous solvents and reagents are used to remove an element from an aqueous solution. The…

to it. The term “acid”is derived from the latin term acere, which means sour. (properties of acids and bases) Acids are tested with litmus paper, and turn it red, and destroy the properties of bases. Acids also are able to conduct electric currents. Acids produce hydrogen ions in solutions. (properties of acids and bases) Acids react with metals to form hydrogen gas. When adding an acid to a base, salt and water will be…

(NaOH). The amount of luminol collected was 0.2693 g with the percent yield of 161%. The product of the first reaction was then used to recreate the chemiluminescence experiment by mixing luminol, oxidizing agent (hydrogen peroxide), and base (any hydroxide base). This reaction emitted a blue light along with yielding phthalate salt. The experiment showed the importance of luminol in chemiluminescence and yielded much needed knowledge about reactions and how they…

The purpose of this lab was to identify the amount of salt needed in the water to “flink”, the point at which an object sinks or floats, the golf ball in a salt solution. Flinking occurs when the object is neither sinking or floating, it appears as if it is suspended in the middle of the solution. To flink an object, the object’s density has to have the same as the density of the solution that it is placed into. To achieve the same density of both the salt solution and golf ball, manipulation of…

It is essential for pharmacists to be able to predict the theoretical rate kinetics of pharmaceutical products in order to determine its shelf life. As the shelf life is defined by (t90), which is the availability of greater or equal to 90% of the drug, it is important to discover the rate of degradation of a drug to ensure that the patients receive an adequate dose of the drug. In this experiment, the stability of the active ingredient of Aspro Clear is investigated to identify the rate of…

It is important to note that the goal of this experiment was to find the pKa value of bromothymol blue, a pH indicator commonly used in titrations. [UNC, 2017] The pKa is where the number of moles of acid to conjugated base are equivalent. To find this, both Beer’s Law and spectroscopy were utilized in an attempt to make graphs to show just where this value occurred. According to Sigma-Aldrich, the pKa of bromothymol blue is approximately 7.10. [SIGMA, 2017] The final pKa found experimental was…

Marwah Alabbad Qualitative aspects of Equilibrium Post lab 10/7/15 1. Tables in experience 1: A. Test tube 0.5M HNO3 (mL) Drops of Potassium thiocyanate Drops of Ferric nitrate Observation (color) A 0.5 mL 1 1 Light orange B 0.5 mL 1 9 Vibrant orange( medium) C 0.5 mL 5 5 Vibrant red D 0.5 mL 9 1 Dark shade of orange E 0.5 mL 9 9 Dark red B. Removing Fe3+ Test tube 0.5M HNO3 (mL) Drops of Potassium thiocyanate Drops of Ferric nitrate 1% NaOH (mL) Observation F 0.5 mL 5 5 - The color has…

First, 1.32 g of isoborneol was mixed with 1.00 mL of glacial acetic acid. The solution was heated to 50° C while 1.70 mL of NaOCl added. Then 15.0 mL of NaOCl was measured into a separatory funnel and added dropwise to the solution for 10 minutes. The flask was sealed while heating and stirring continued. NaOCl in the solution was tested every five minutes using starch-iodide paper for 30 minutes. After 10 minutes, 2.0 mL of NaOCl was added. A total of 6.0 mL of NaOCl was added over a 20 minute…

Introduction An Alka seltzer is a Blood thinner and a nonsteroidal anti-inflammatory drug that can treat pain, fever, headache, and inflammation. Its two main ingredients are citric acid and baking soda. When the tablet is dropped in water, the citric acid and baking soda react, which causes the alka seltzer to dissolve. If an alka seltzer is dropped in orange juice, then it will dissolve quicker compared to water because the orange juice has a higher level of acidity. Methods For this…

With this experiment intend to prove Salem Lakes ability to buffer chemicals used in the water treatment process versus that of the Yadkin River. Using a jar test machine, simulated the addition of an acid in the form of Al2SO4, and a base NaOH to the coagulation process. Salem Lake does show a preferred buffering at higher acid doses, though Yadkin River is more efficient at the low to mid-range dose. INTRODUCTION There is a distinct difference in the buffering capacity of Salem Lake versus…