Base

Table: Summary of method validation parameter results Validation parameters Acceptance criteria Results Aminexil Minoxidil System suitability Theoretical plates should be NLT 2000 2411 11620 The tailing factor should be NMT 2.0 1.50 1.10 The RSD of five replicate injection should be NMT 2.0% 0.42 0.90 Specificity Peak of Aminexil and Minoxidil should be pure Peaks of Aminexil and Minoxidil are pure. The degradation products should be well resolved from Aminexil and Minoxidil peaks All…

Sulphite ion (SO32-) is a weak base, but undergoes some hydrolysis to produce basic solutions. In acidic solution, the equilibria are shifted to form sulfurous acid, resulting in the evolution of SO2 gas. Sulfur dioxide is a colorless gas with a characteristic choking odor. The sulfites of Na+, K+, and NH4+ are soluble in water. Most other sulfites are insoluble in water. However, due to the basic nature of SO32-, all sulfites dissolve in acidic solution. Sulphites may occur in natural waters or…

Determining Value for Money of Different Brands of Vinegar Aim – To compare the amount of acetic acid found in two different brands of vinegar to see which is the most cost effective. Materials – • Apron • Safety Glasses • Hair Tie (If appropriate) • 50mL burette • 250mL conical flask • 2 x Beaker • Measuring Cylinder • Labels • Pencil • Standard solution of Sodium Hydroxide, NaOH(aq) • Two different brands of vinegar • Phenolphthalein Indicator • A clean white tile • Distilled water • Retort…

The Case of the Mix-Matched Chemicals Hypothesis: By measuring the pH of the unknown and known chemicals, the types of chemicals in the unknown bottles will become known. Purpose: The purpose of this experiment is to determine the type of chemicals that are inside the mislabeled bottles. Materials: • pH strips • 8 bottles of known chemicals: o silver nitrate o iron (III) nitrate o copper (II) nitrate o sodium iodine o sodium hydroxide o nitric acid o lead (II) nitrate o sodium…

Assessment Directions: Choose the correct answer from the choices below. 1. The mass of an atom expressed relative to the mass of? A. Carbon-6 C. Carbon-12 B. Carbon-10 D. Carbon 2. It is defined as the number of atoms of that element equal to 12.0 grams of an isotope of Carbon. A. Molar Mass C. Particles B. Stoichiometry D. Mole 3. The first step in every Stoichiometry Problems is to? A. Balance the equation C. Solve the mass of the…

PH levels are a measure of how acidic or basic your beverage is. They show what beverages are more acidic, like soda, and what beverages are more basic, like water. It’s measured on a scale from one to fourteen. One through six are the acid levels, seven is the only neutral level, and eight through fourteen are the basic levels. First, get 2 drinks of choice and pour them into two different cups. Then, record its pH level, as well as the room temperature. Next, take another liquid and mix it…

Vinegar Dilute and Impure Acetic Acid or better known as vinegar is a compound formed by the chemical reaction of carbon, hydrogen and oxygen. The composition of vinegar is acetic acid (C2H4O2) and water. Also, the formula for this compound is CH3COOH. These elements are nonmetals,so the type of bond that this substance made is covalent. Vinegar has many kind of properties and utilization in several ways. For example, it can be use for food preparation, cleaning and health. When added in…

After thymol blue was added, the pH-buffered samples developed the colors of red, yellow, green, and blue as the pH of the solutions increased (Figure 3.1A). The pH-2 buffer turned to a light red-pink color, while pH-3 to pH-6 displayed very similar forms of rich yellow or light orange (Figure 3.1A). The neutral pH buffer solution appeared as a saffron green colored solution (Figure 3.1A). A mixture of yellow and green was apparent in the dijon color of the pH-8 buffer (Figure 3.1A). The buffer…

We ran MgCl2 through various tests to see if its properties match our UWC. the first test was to compare the solubility of UWC and MgCl2. We added 1mL of distilled water to two different beakers each and gradually added 1g of MgCl2 and 1g of our UWC to each beaker. Approximately after 15 minutes, both solids dissolved in the water and MgCl2 passed this test. The second experiment was the halide test to determine if there are any Cl- ions in both solutions. We added 1 mL of 6M HNO3 and 1mL of…

Procedure: To begin this experiment all of the equipment was collected. The materials used in this experiment were a small plastic weighing dish, oxalic acid, a 250 mL Erlenmeyer flask, distilled water, a buret, NaOH solution, a 150 mL beaker, funnel, and phenolphthalein indicator. Before the experiment began the buret was cleaned with distilled water, a buret brush, and dish soap. The buret was completely washed out in order to not cause any faults in the results of the experiment. Once the…