Chemical Reactions- Sodium Hydroxide - 1555 Words

Chemical Reactions- Sodium Hydroxide A chemical reaction is a change where two or more substances are changed into a new substance. You can identify a chemical reaction by colour change, effervescence (bubbles), when light or heat given off, and the change is usually irreversible. There are 6 main types of chemical reactions- combustion (often called burning), synthesis, decomposition, neutralization, single replacement and double replacement. A combustion reaction is a reaction with oxygen, and heat is evolved (given off). A common example of combustion is Hydrogen +Oxygen= Water Synthesis is a reaction where two or more substances combine to make a compound. An example of a synthesis reaction is Iron + Oxygen = Iron Oxide†¦show more content†¦The sodium oxide is then mixed with water to produce sodium hydroxide. Na2O + H2O = 2NaOH Nicolas LeBlanc, who found out a way to produce an alkali from sea salt, discovered the LeBlanc process. Another way to make sodium hydroxide is by adding lime (general term for various minerals where carbonates, oxides and hydroxides of calcium predominate ) to natron (a mineral salt mainly with the mixture of sodium bicarbonate, sodium chloride, sodium carbonate and sodium sulphate ) . This is also a synthesis reaction, as it combines 2 simple substances and makes one complex substance. Lime + natron = sodium hydroxide Sodium hydroxide is very important in the industrial, commercial and biological world. In the industrial world, it is used for the textile industry, making paper, making soap and making detergent. In the textile industry, sodium hydroxide is used for scouring the material before weaving. In the paper industry, sodium hydroxide breaks down the lignin in wood, to free the fibres that can be turned into paper. The soap and detergent industries use sodium hydroxide to make soap by the saponification (the reaction of a metallic alkali base with fat or oil to make soap ) process. Saponification is a traditional process used by the Arabs in the 7th century, and it is still used today. In the commercial world, sodium hydroxide is used to prepare food. For example, German pretzels are dipped in a sodium hydroxideShow MoreRelatedPrac Report-Precipitation785 Words   |  4 Pagesoccurs when two aqueous (soluble solids) solutions are combined and the reaction forms an insoluble solid. When in soluble solids are formed the process is known as a precipitation. An insoluble solid is a solid that cannot dissolve unlike a soluble solid. Therefore only insoluble solids can form precipitates. In the following experiment six solutions were mixed with each other (groups of twos) in test tubes to test which reaction will result in an insoluble solid. See method for more detail. It isRead MoreUses and Properties of Sodium Hydroxide663 Words   |  3 PagesChemical Symbol: NaOH What it means: Sodium hydroxide is made up of sodium (Na), oxygen (O) and hydrogen (H). The chemical symbols for oxygen and hydrogen come from their names. Sodium’s chemical symbol, Na comes from the Latin word Natrium which means sodium carbonate. What state we usually find it in and why: Sodium hydroxide is an odourless, white crystal solid at room temperature. This is because sodium hydroxide has an ionic bond, meaning it has a high melting point, above room temperature.Read MoreThe Ionic Reactionalization786 Words   |  4 Pages 1. For Part 2: Single-Displacement Reactions: For each of the four single-displacement reactions, describe what happened in each well. If a chemical reaction occurred, write a balanced equation for it. Then using the A, B symbols, write a general equation for a single-displacement reaction. Here are the chemical formulas of the reactants for each reaction: †¢ zinc – Zn copper sulfate – CuSO4 In well 1A there was a chemical reaction which turned the zinc black, while theRead MoreEssay on Determination of the Rate Constant842 Words   |  4 Pagesï » ¿Determination of the Rate Constant for a Chemical Reaction Department of Chemistry Abstract This experiment was performed to determine the rate constant k, for hydrolysis of tertiary butyl chloride to tertiary butanol. The solvent system for this reaction is 45% isopropyl alcohol and 55% water. The rate of hydrolysis of t-butyl chloride is measured by the decrease in the concentration of this reagent with time. The rate of decomposition of t-butyl chloride must be equal to the rate ofRead More6.03 Calorimtery Honors Essay897 Words   |  4 PagesThe Dissolving of Solid Sodium Hydroxide in Water Procedure: 1. Measure out approximately 200 mL of distilled water and pour it into the calorimeter. Stir carefully with a thermometer until a constant temperature is reached. Record the volume of water and the constant initial temperature of the water on your data table. 2. Place a plastic measuring trough on top of the digital balance, and then zero the balance (press the tare button) so that the mass of the trough will be ignored andRead MoreReactions With Phosphoric Acid By Jaime Conklin1339 Words   |  6 Pages Stoichiometric Reactions with Phosphoric Acid By Jaime Conklin Partner: Deanna Ryan CHE 120-03 Instructor: Mr. Cusumano September 30, 2015 Purpose The purpose of this experiment is to examine the stoichiometric relationship between reagents and the identity of the products by using three acid/base neutralization reactions of a triprotic acid, phosphoric acid, and varying molar equivalents of sodium hydroxide. The data will be used to determine the formulaRead MoreChemical Reaction On Chemical Change937 Words   |  4 PagesAnalyzing chemical change Abstract Changes can be chemical or physical in nature. If a chemical change is taking place we will be breaking bonds and forming new bonds and therefore creating a new substance. In a Physical change we will have the same substance but simply in a new form. (Dickinson et al. 197). In order to collect evidence to prove a chemical change is occurring we need a change in the indicators. The more active a chemical is the more likely it will have a chemical reaction with anotherRead MoreBar Soap Synthesis Lab From Fats And Lye993 Words   |  4 Pagessaponification is the name for a chemical reaction between an acid and a base to form a salt called soap.409575187388500 Saponification has been used for centuries as a part of the soap making industry. Many companies create a variety of soap products for commercial use, soaps can be in multiple forms like bars, liquid, or even powder. In this lab it was planned to create a bar of soap. Heating triglyceride in a fat or oil with an aqueous alkali, sodium hydroxide, results in hydrolysis of the triglycerideRead MoreCopper Cycle Lab Report1517 Words   |  7 Pageselement, in this instance, copper, reverts to its elemental form after a chain of reactions. This experiment is very dangerous because of the reactions between the strong acids and bases. In this experiment I performed a series of reactions starting with copper metal and nitric acid to form copper (II) nitrate. Then I reacted copper and several other solutions such as, sodium hydroxide, sulfuric acid, ammonium hydroxide, and hydrochloric acid to form precipitates. In conclusion my percent recovery ofRead MoreStandardization of Sodium Hydroxide Solution1520 Words   |  7 PagesAbstract. This report is about how to standardize a Sodium Hydroxide (NaOH) solution by titrating it with pure sample of Potassium acid Phthalate (KHC8H4O4). This experiment has two sections. The first section is to standardize the Sodium Hydroxide by titration. Three sample of 0.7 – 0.9 g of solid KHP are place into each of the three numbered Erlenmeyer flasks. 50 ml of distilled water are added to each three of it from graduated cylinder and constantly shake it until the KHP solution are completely