The Enthalpy Values for the Reaction Between Calcium Carbonate and Calcium Oxide with Hydrogen Chloride [IMAGE] H3 [IMAGE]CaCO3 (s) CaO (s) + CO2 [IMAGE] [IMAGE] H1 HCl H2 HCl CaCl2 (aq) Results ======= Variables of CaCO3 ================== Mass of CaCO3 + weighing bottle 3.302 g Mass of empty weighing bottle 0.831 g Mass of CaC03 used 2.471 g Temperature of acid initially 18 C Temperature of solution
Ammonium chloride caused the water to cool. This means that the Ammonium chloride drew energy from the water to help it dissolve. As a result of losing its energy, the water cooled down. Calcium chloride caused the water to warm up. This means that energy from the calcium chloride was released and the water absorbed this heat. As a result, the temperature of the water increased. 3. Since you are measuring the temperature of the water, let’s call that the system. Relative to the water, was this
Wanted: Calcium Chloride Calcium Chloride is wanted for a crime in Atom-city. If you have any information of the whereabouts of Calcium Chloride, please contact sheriff Cassie Mes. Calcium Chloride, also known as CaCl2, is an ionic compound of calcium and chlorine. Another name of this compound is Calcium Dichloride (“Di” meaning 2). Calcium Chloride is an inorganic salt, (doesn’t contain carbon-hydrogen bonds) which exists in a solid form or as a liquid solution. The solid form of calcium chloride
1. Introduction Heavy metals and their salts (Cu, Zn, Hg, Pb, Co, Ni,) are widespread industrial pollutants. In the waters they come from natural sources (rocks, the surface layers of soil and groundwater), the wastewater of many industrial enterprises and precipitation, which are polluted with smoke emissions. Heavy metals as trace elements are constantly encountered in natural waters and aquatic bodies. Depending on the geochemical conditions of the wide variations in their level. Heavy metals
Background Paper This experiment examines deicers and their effect on local grasses such as Tall Fescue (Festuca arundinacea). More specifically, it looks at the chemical deicers, Sodium Chloride (NaCl) and Calcium Chloride (CaCl2) and how they affect the growth of Tall Fescue. The variables in this experiment include the independent variable; the presence of deicers, and the dependent variable; how tall the grass grows. Tall Fescue is a very popular cool season grass. Tall Fescue’s ideal growing
AIM/PURPOSE The purpose of this experiment was to prepare two solutions and use them to perform a precipitate reaction. Then using the results and mass gathered from the experiment, to determine the limiting reagents and to calculate percent yield. BACKGROUND INFORMATION The limiting reagent was calculated in this experiment. The limiting reagent is the reactant that limits the reaction and the amount of product that can be formed. The reactions stops only when all of the limiting reagent is consumed
The Dehydration of Cyclohexanol to Form Cyclohexene In order to dehydrate Cyclohexanol it is required that a dehydration agent, in this case phosphoric acid, be added and for the mixture to be distilled with the Cyclohexene being taken off between 343K and 363K. This reaction gives the formula: In order to keep the experiment at a manageable size 0.1 mole of Cyclohexanol was used along with 4cm3 of concentrated Phosphoric acid. 0.1 mole of Cyclohexanol x 100.2 = 10.2 100.2 0.962
The purpose of the lab is to determine the effectiveness of using gravimetric analysis in determining the hardness of a water sample. More specifically, this lab tests for the amount of dissolved substances such as magnesium carbonate and calcium carbonate. The amount of these substances dissolved in water determines water hardness as they contribute cations to water which result in a buildup of scum or solid CaCO3 as a precipitate. All water tends to have a different hardness as it is determined
components to humanity and life as we know it. Without them, many things that we both love and need would be gone. These remarkably diverse yet very similar elements that make up the alkaline earth metals family are: Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba), and Radium (Ra). Although this family is often overshadowed by the infamous alkali metals, you will soon learn how spectacular and brilliant these metals really are and their value to human life. The alkaline earth
*LoggerPro *salt *Vernier Temperature Probe *stirring rod *ring stand *100 ml of 1M calcium chloride *utility clamp *100 ml of 1M magnesium chloride *one test tube *100 ml of 1M sodium chloride *600-ml beaker *100 ml of 1M potassium chloride *water *100 ml of 1M lithium chloride *triple-beam balance *weighing dish *PROCEDURES: 1. Put about 400 ml of water and only 5 to 6 ice cubes
a German chemist, improved Oersted's process by using metallic potassium. He was the first to measure the specific gravity of aluminum and show its lightness. In 1854 Henri Sainte-Claire Deville, in France, obtained the metal by reducing aluminum chloride with sodium. Aided by the financial backing of Napoleon III, Deville established a large-scale experimental plant and displayed pure aluminum at the Paris Exposition of 1855. Aluminum is a lightweight, silvery metal. The atomic weight of aluminum
discovered this metal). This metal was discovered in Khafajah Mesopotamia; around 2500 BC (first kiln date). The Ancient Romans prepared lime as calcium oxide. However this could not be the first scientific date of discovery; this is because it was not discovered, isolated and named. An English scientist named Humphry Davy was the first person to isolate calcium, this was done in 1808 by mixing mercuric oxide and lime; he then performed an electrolysis of the mixture. Davy then used electrolysis to isolate
"The effects of calcium chloride, sodium bicarbonate, phenol red solution, and distilled water when mixed in different combinations." Introduction Calcium chloride, sodium bicarbonate, phenol red solution, and distilled water will be used in different combinations to produce different reactions. Which combination is required for each reaction viewed when calcium chloride, sodium bicarbonate, and phenol red solution were all mixed? Different combinations of materials were carried out in a plastic
Investigate the rate of reaction between Calcium Carbonate and Hydrochloric Acid at different concentrations Aim: To Investigate the rate of reaction between Calcium Carbonate and Hydrochloric Acid at different concentrations. Background Knowledge: I know from my knowledge of science, that by adding together a carbonate and an acid, that a salt, water and Carbon Dioxide are produced. Therefore in order to measure the rate of reaction, one of these products needs to be measured, and the rate at
to the solution. The freezing point of H2O becomes lower as more particles are added until the point where the salt can no longer dissolve. For a solution of table salt (sodium chloride, NaCl) in water, this temperature is -23°C with precise laboratory situations. In real conditions, on a pavement or road, sodium chloride can only melt ice down to approximately -14°C, though this is still effective when combatting the ice. Freezing point depression is a colligative property of H2O. Colligative properties
Understanding About the Homogeneous Precipitation Synthesis and thermal analysis of the group 2(IIA) metal oxalate hydrates Objective : 1. To run the synthesis of calcium oxalate via the precipitate from solution containing calcium ion and oxalate ion. 2. To do a thermo gravimetric analysis on calcium oxalate. 3. Understand and practice the method of homogeneous precipitation through this experiment. Introduction Thermo gravimetric analysis (TGA) is one of the common analytical
Investigating How Concentration of Acid Affects the Reaction Between Calcium Carbonate and Hydrochloric Acid Introduction ============ According to the collision theory temperature, concentration, surface area and catalysts all affect rates of reaction as shown in the diagrams below. Increasing any of these should increase the number of collisions and so increase the reaction rate up to an optimum point. Increasing the temperature causes the particles to collide with more energy and
Experiment is to investigate the rate of reaction between hydrochloric acid and calcium carbonate Hydrochloric acid + Calcium Carbonate Þ Calcium Chloride + Water + Carbon Dioxide 2HCl (aq) CaCo3 (s) CaCl2(s) H2O (aq) CO2 (g) There are a number of variables in this experiment and these are listed below as input variables and outcome variables. The input variables are the ones that I can change in order to affect the experiment and the outcome variables are the ones I will measure to see how the
Investigating the Hardness of Water Planning Aim To investigate the hardness of water in 5 different water solutions Background knowledge about hard water The hardness of water is caused by the presence of Calcium 2+ and magnesium 2+ ions in the water. These minerals in water can cause some everyday problems. They react with soap and produce a deposit called "soap scum" that remains on the skin and clothes and, because it is insoluble and sticky, cannot be removed by rinsing. Soap
causes the bones to soften and weaken before the fusion of the growth plate. The adult version of this disease is called osteomalacia. In both adults and children it is caused by a long term and extreme vitamin D deficiency. Vitamin D allows for calcium and phosphorous to be absorbed from the gastrointestinal tract which is necessary for bones to have their mechanical properties. In children Rickets can result in bone pain, slow growth, increase risk of fractures and bone deformities, such as scoliosis