Lab 4: Le Chatelier’s Principle Name: Cammey Mahowald Lab Partners: None Date of Experiment: March 16‚ 2015 Course: CHE 112 Abstract: The purpose of this experiment is to understand the components of a reaction at chemical equilibrium and use Le Chatelier’s principle to predict the direction an equilibrium position will shift upon changes in the concentration‚ temperature‚ and pressure. It was determined that in the equilibrium of chromate and dichromate it is an exothermic reaction and in the
Premium Chemistry Chemical reaction Temperature
Exothermic and Endothermic Reactions The release of energy in chemical reactions occurs when the reactants have higher chemical energy than the products. The chemical energy in a substance is a type of potential energy stored within the substance. This stored chemical potential energy is the heat content or enthalpy of the substance. The collection of substances that is involved in a chemical reaction is referred to as a system and anything else around it is called the surroundings. If the enthalpy
Premium Energy Thermodynamics
examine a number of different chemical reactions and determine if they are exothermic or endothermic. Apparatus: • Test tubes {Around 10-12 in number} • Test-tube rack • Spatula • Digital thermometer { ± 0.1° C} • Digital balance {± 0.01 g} • Measuring cylinder {± 0.5cm³} • Different chemicals Introduction/Theory: Exothermic reactions are those reactions that release energy in the form of heat. Endothermic reactions need to absorb energy in the form of heat
Premium Sulfuric acid Thermodynamics Chlorine
Experiment 11 Date: 28-3-2011 Title: Interpretation of reaction by the Le Chatelier’s principle Objective: To determine the factors that affecting the equilibrium position Introduction: Le Chatelier’s principle states that if a system in equilibrium is subjected to a change‚ the equilibrium position of the system will shift in a direction to minimize the effect of the change. Iron(III) ions and thiocyanate ions (NCS-) react in solution to produce thiocyanatoiron(III) (FeNCS2+)‚ a
Premium Ion Chemistry Sodium
Thermochemistry Thermochemistry is the study of heat evolved and absorbed during the chemical reactions. The system is the interest of the universe; the surroundings are the rest of the universe in which the exchange of the energy with the system takes place. Both‚ the system and the surroundings make up the universe. Heat flow is the transfer of heat from a warm place to a cooler one. System to surroundings: Surroundings to system:
Premium Temperature Thermodynamics Heat
Experiment 11 Date:31-03-2009 Title:Interpretation of reaction by the Le Chatelier’s principle Objective:To determine the factors that affecting the equilibrium position Introduction Iron(III) ions and thiocyanate ions (NCS-) react in solution to produce thiocyanatoiron(III) (FeNCS2+)‚ a complex ion‚ according to the equation : Fe3+(aq) + NCS-(aq) [pic] FeNCS2+(aq) yellow colourless blood red The colour produced by the complex ion indicates the position
Premium Ion Chemistry
* . Introduction Endothermic reactions are accompanied by the absorption of heat. The dissolving of ammonium nitrate in water is an example of an endothermic reaction. The solution resulting from this mixture is colder than either the ammonium nitrate or the water. This is the simple explanation of what happens in an instant ice pack. The more detailed information will be discussed in the following paragraphs. Cold Packs Most cold packs come with a fabric cover made to absorb condensation and
Premium Energy Ion Ammonia
“Le Chatelier’s Principle” Mihir Patel‚ Mississippi State University 2015 In 1884‚ a French chemist Henry-Louis Le Chatelier‚ “proposed one the central concepts of chemical equilibria.1” Henry was best known for his principle‚ properly name Le Chatelier’s principle. The principle allows one to “predict the change of conditions will have on a chemical reaction.3” His finding of this principle came from his early work in the experimental study of thermodynamics.3 Le Chatelier’s principle states
Premium Chemical reaction Chemistry Reaction rate
Purpose: The purpose of this lab is to develop a deeper understanding of LeChatelier’s Principle by observing several systems at chemical equilibrium and interpreting the effects of varying concentrations and temperature. The principle states that if systems at equilibria are altered or disturbed in any form‚ the equilibria will shift to reduce the disturbing influence ( Catalyst‚ 186). In a 3 part experiment‚ we analyzed the outcome of changes in reactant and product concentrations‚ equilibrium
Premium Chemical reaction Chemistry Sodium chloride
Lab # 25 2/15/12 Le Chatelier’s Principle Lab Purpose: To discover the effects of Le Chaterlier’s principle. Description: Chemical reactions can take place both forwards and backwards. When a reaction reacts to form products‚ some of the products react to form the reactants. In a chemical reaction‚ when the rate of a forward reaction equals the rate of a backward reaction‚ it is at equilibrium‚ where the products and reactants stay constant. If there is a change in condition on either reactants
Premium Ammonia Chemical reaction Chlorine