Sodium hydroxide

Discussion By using acid-base extraction techniques, a three-component mixture was separated into its individual components which included an acidic, basic, and neutral component as previously mentioned. A separatory funnel was the mechanism used to carry out this procedure. Its easy handling allowed for thorough mixing of the solution. It was equipped with a stopper which was opened to release pressure from inside the funnel caused by the heat from one’s hands and also the reactions taking place

of the hydrazones and comparison of the hydrazones using their RGB values. II. Materials and Methods A. Reagents The following are the reagents were used in the experiment: Benzaldehyde Acetaldehyde 15% sodium hydroxide solution Sodium chloride 95 % ethanol solution 40% sodium bisulfite solution 2, 4-dinitrophenylhydrazine Nitric acid Ice B. Apparatus and Equipment The following are the apparatus and equipment were used in the experiment: 50-mL round-bottom flask 50-mL beaker 10-mL

Titration is a technique that is used to determine and analyze the concentration of a substance. It is based off of mole ratios between the two substances taking part in the lab. Burets are used in the titration of substances, which are large glass tubes with a valve attached to the bottom to allow the specially measured amount of substance into another. The amount of each substance must be very precise and be recorded properly. The analysis of these reactions are usually simplified to a 1:1

Medicinal plants are used traditionally in the treatment of various kinds of diseases since time immemorial. The present study was carried out to evaluate the antimicrobial and antioxidant activities of leaves from Elephantopus scaber by using different solvents (ethyl alcohol, acetone and aqueous). The ethyl alcohol, acetone and aqueous extracts of leaves were subjected to phytochemical analyses, which revealed the presence of alkaloids, phenols, flavonoids, saponins, steroids, tannins, coumarins

another to have a slightly negative charge. The presence of partial charges within both the solute and solvent allow for the molecules to adhere to one another. For example, water is very polar and its partial charges can dissolve sodium chloride by adhering to the positive sodium ions, and the negative chlorine ions. Polar solutes dissolve in polar solvents because there are no partial charges within either of them. Both substances will mix together because no molecules show significant affinity for the

CORROSION OF EMBEDDED STEEL IN ALKALI-ACTIVATED SLAG CONCRETE SiYu Yang Department of Civil and Environmental Engineering University College London University of London September 2015 Abstract Sustainablitiy is a major consideration for the construction industry… 目录 Abstract 2 1.Introduction 4 1.1 Introduction 4 1.2 Objectives 5 2. Literature Review 7 2.1 Slag 7 2.2 Slag Activation 7 2.3 AAS Engineering Properties 8 2.4 Passive Film 9 2.5 Corrosion Mechanisms 9

Lab Report: Heat of Neutralization Abstract This experiment was performed to determine the heat of neutralization between Hydrogen chloride (HCl) and Sodium hydroxide (NaOH). A temperature probe was used to measure the temperature of the reaction when the base (NaOH) was poured into the acid (HCl). The data was collected on logged on LoggerPro. Introduction HCl is known as Hydrogen chloride in its gas state, but when in the presence of water, it is known as hydrochloric acid(PubChem). Hydrochloric

Only keep a pen and paper away from the experiment to record results Procedure: 1. Rinse both measuring cylinders with distilled water then rinse one measuring cylinder with hydrochloric acid (HCl) and another with sodium hydroxide (NaOH) 2. Using one of the disposable pipettes, measure 40cm3 of NaOH (1.0M) in the measuring cylinder you rinsed with NaOH and pour this into Calorimeter #1 (Glass Beaker). Place thermometer inside solution 3. Using the other disposable

Pipets • Spatula • Test tubes Materials:  Ammonium carbonate, 0.5g  Calcium carbonate, 0.5g  Copper chloride solution, 4mL  Hydrochloric acid, 4mL  Magnesium ribbon, 2-4 cm strips  Phenolphthalein indicator, 1 drop  Sodium hydroxide solution, 1mL  Sodium phosphate solution, 1mL  Water 

Pre-Laboratory Assignment 1. What are the hazards associated with sodium hydroxide (NaOH) solution? Sodium hydroxide solutions, especially in high concentrations, are toxic and corrosive. 2. (a) What buret reading should you record when the liquid level is as shown in Figure 2? In Figure 2, the lower meniscus lies below the 3 mL line and 4 minor gradations that signify 0.1 values. Estimating the uncertain digit to be 0.04 mL, the reading we record for this particular buret is 3.44 mL.