Chemical Equlilbria Essay, Research Paper
Work to be done: *By experiments find out how chemical equilibria works. Chemicals and apparatus: *Two beakers *Five test-tubes *Kaliumtiocyanat, KSCN *0.002M Kaliumtiocyanatsolution, KSCN + H2O *Dinatriumfosfat, Na2HPO4 *0.002M Iron(III)nitratesolution, FeNO3 *0.2M Silvernitratesolution, AgNO3Lab: Lab 1 One test-tubes is filled half of distilled water (A) and another with kaliumtiocyanatsolution (B). Both solutions are colorless. Solution (B) contains SCN-. I add five drops of iron(III)nitratesolution to both test-tubes and the kaliumtiocyanatsolution turns dark-red. The explanation is that there has been a reaction in solution (B), Fe3+ + SCN- а FeSCN2+, where FeSCN2+ has a dark-red color. Lab 2 The solution in test-tube (B) is placed in five other test-tubes. I will now perform four different experiment and then compare with the original solution, and therefor I label the test-tubes a, b, c, d and e.In test-tube (a) I add some KSCN (cristals) and therefor raise the concentration of SCN- in the solution. The visible change is that the solution turn darker red. And since FeSCN2+ is red, the conclusion is that the solution contains more FeSCN2+.To test-tube (c) I add some FeNO3 and the concentration of Fe3+ is increased and the solution turns darker red а the concentration of FeSCN2+ is higher. Since no more SCN- has been added the ratio Fe3+ and SCN- must be in equilibrium. The solution now contains Fe3+, SCN-, FeSCN2+, NO3- and K+.To test-tube (d) I add five drops of silvernitrate, AgNO3, and the solution is turning brighter – the concentration of FeSCN2+ must decrease. There seems to be a fight about the SCN-ions, both Ag+ and Fe3+ want them, but the Ag+ions seems to win and form a salt, AgSCN, that is hard diluted in water. The effect is, as described earlier, that the concentration of FeSCN- has decreased and the color of the solution is lighter red. The reaction formula is Fe3+ + SCN- а FeSCN2+, the reaction is to the left and the reaction is reversible.In the last test-tube I add some dinatriumhydrofosphate, Na2HPO4, and the solution becomes colorless, there is no more FeSCN2+. The concentration of Fe3+ has decreased. In the reaction Fe3+ + SCN- а FeSCN2+, the reaction is to the left. CONCLUSION: In the reactions above I have changed the equilibrium by changing the concentration of different substances.
Другие работы по теме:
Ants Essay Research Paper There are more
Ants Essay, Research Paper There are more then 10,000 species of ants and they all share the same common traits. The traits that they share are three body sections. The body sections
Batteries Essay Research Paper BatteriesSince my project
Batteries Essay, Research Paper BatteriesSince my project is mainly about batteries, I decided toresearch the topic “battery.” Here is the research that I discovered. The first person ever to use the battery was Alessandro Volta.He was an Italian professor who devised the first battery in the1800’s. He created this device to provide steady electric currentfor study and practical use.
Untitled Essay Research Paper MATERIAL SAFETY DATA
Untitled Essay, Research Paper MATERIAL SAFETY DATA SHEET WOMEN: A Chemical Analysis ELEMENT: Woman SYMBOL: WO DISCOVERER Adam ATOMIC MASS: Accepted as 118 lbs, known to vary from 110 to 550 lbs. OCCURRENCE: Copious quantities throughout the world. PHYSICAL PROPERTIES: 1. Surface usually covered with a painted film. 2.
Creatine Essay Research Paper CreatineAthletes and regular
Creatine Essay, Research Paper Creatine Athletes and regular people alike try many different supplements to find one that they can use to help increase their muscle mass. They may not realize it, but their bodies already produce a chemical that is great for that purpose and consuming more of it in form of a supplement can be exactly what they are looking for.
Yup Essay Research Paper The medium that
Yup Essay, Research Paper The medium that was used in Kevin Killrakis art work was colored pastels. The technique used is shading, and is very creative. Basically, what I see in Kevin?s artwork is two very one of a kind daggers.
Chemical Castration Essay Research Paper Biological Psychology
Chemical Castration Essay, Research Paper Biological Psychology: Essay #2 “What are some arguments for and against the use of hormone treatments on sexual predators?” California became the first state in 1997 to mandate chemical castration for several classes of convicted sexual predators.Proponents for the use of hormone treatments on sexual predators give several very good arguments.
Art Work Essay Research Paper Don
Art Work Essay, Research Paper Don’t exist exactly definition for a work of art. Work of art is something made by a person. Hence sunsets beautiful trees, ”found” natural objects such as grained driftwood, “painting” by insects or birds and a host of other natural phenomena are not considered works of art, despite their beauty.
Chemical Compounds Bromine Essay Research Paper The
Chemical Compounds Bromine Essay, Research Paper The element Bromine, is a red liquid which is explosive at room temperature and has a red brown vapour. It has an atomic number of 35 and an atomic mass of 79.909. The
Goals Essay Research Paper Jonathan drlasEssay 4This
Goals Essay, Research Paper Jonathan drlas Essay 4 This is my first work on this paper. My goal that I?am going to incorporate in my paper is a money goal. I want to save up 3,000 dollars before I leave for school. I leave on the 15 of august so there is a little over two months that I have to achieve this goal.
Chemical Essay Research Paper The chemical equation
Chemical Essay, Research Paper The chemical equation 2H2+O2[right arrow]2H2O represents the reaction of hydrogen and oxygen to form water. The arrow points in the direction of the reaction from the reactants (substances that react) toward the product or products. In this case the reactants are hydrogen (written H2 because each molecule consists of two atoms of hydrogen) and oxygen (written O2 because each molecule consists of two atoms of oxygen) and the product is water.
Basic Chemical Engineering Essay Research Paper In
Basic Chemical Engineering Essay, Research Paper In engineering science, you d be among students who want more than a degree: they want to be challenged and stretched. The average entry grade is over 90%, and the program is designed to prepare students for the rigors of further education. Some graduates go on to a Masters or Ph.
Niels Bohr Essay Research Paper October 21
Niels Bohr Essay, Research Paper October 21, 1998 Niels Bohr Niels Bohr was born in Copenhagen, he is the son of a physiology professor, and went to school at the University of Copenhagen, this is where he got his doctorate in 1911.
Costa Sakellariou Essay Research Paper Costa Sakellariou
Costa Sakellariou Essay, Research Paper Costa Sakellariou Visual art can definitely be seen as a language. With every artist there is always some sort of meaning that they are trying to convey to the viewers of their work. The means of how they deliver that message is the language in which their work uses. In Costa Sakellariou?s work I especially felt there was some sort of language being spoken.
Untitled Essay Research Paper Mustard Gas is
Untitled Essay, Research Paper Mustard Gas is a group of chemical compounds used in chemical warfare, so called because of its mustard-like smell. Mustard gas contains carbon, hydrogen, and chlorine, with either sulfur or nitrogen. When it comes in contact with skin, mustard gas causes severe blisters.
Sulfuric Acid Essay Research Paper Sulfuric AcidFew
Sulfuric Acid Essay, Research Paper Sulfuric Acid Few chemicals affect people’s lives in as many ways as does sulfuric acid. It is used in making thousands of everyday products and has been called the single most important indutrial chemical. One of its most familiar uses is in automobile batteries. Sulfuric acid is alos used in such manufacturing processes as the production of fertilizers, drugs, detergents, and many metals.
Chemical Bonding Essay Research Paper Chemical bonds
Chemical Bonding Essay, Research Paper Chemical bonds are what make up the world. In bonds, elements are held together and form compounds that may have new physical and chemical properties. There are two main kinds of bonds, they ionic and covalent. In bonding the goal of the atoms involved is to reach a level of stability with less energy.
Chemical And Phisical Changes Essay Research Paper
Title:Chemical and Physical Changes. Purpose:To determine the differences between chemical and physical changes when they happen. Materials: Five test tubes, Bunsen burner, crucible, test tube holder, triple beam balance, ring stand, triangle, evaporation dish, wood splint, copper turnings, copper (II) nitrate, dilute nitric acid, Ba(NO3)2, Na2CrO4, FeCl3, KSCN, AgNO3, ammonium dichromate, safety goggles, and matches.
Chemical Warfare Essay Research Paper Chemical warfare
Chemical Warfare Essay, Research Paper Chemical warfare is war fought with chemicals. The development of chemical weapons and defenses against these weapons are usually considered together in military training. These weapons can be designed to kill large numbers of people, disable them for a while, or destroy their food supplies.
Benzoyl Peroxide Essay Research Paper Chemical Name
Benzoyl Peroxide Essay, Research Paper Chemical Name: Benzoyl Peroxide (C14H10O4) Benzoyl peroxide is the main compound found in several different pharmaceuticals for treating acne, food additives, as polymers, and catalysts in several different reactions. Other common names for this compound are; Oxy-10, Panoxyl, Benzagel 10, Benzoic acid, Lucidol, and several others.
Duties While In A Lab Essay Research
Paper Duties While in the Lab (1) Read chemical labels. (2) Walk with care in the lab. (3) Food beverages, chewing gum, cosmetics, and smoking are NEVER allowed in the lab.
Pesticides Essay Research Paper Pesticides include insecticides
Pesticides Essay, Research Paper Pesticides include insecticides, herbicides and fungicides, which kill insects, weeds, and are harmful to humans. They often have direct or indirect effects on other living things. Synthetic pesticides are chemical compounds; some are more toxic than others. Synthetic pesticides can release compounds that are more toxic than the original pesticides when they break down in the environment.
Article 23 Essay Research Paper Universal Declaration
Article 23 Essay, Research Paper Universal Declaration Of Human Rights ARTICLE 23 -Everyone has the right to work, to free choice of employment, to just and favourable conditions of work and to protection against unemployment-
Carl Pauling Essay Research Paper Carl PaulingCarl
Carl Pauling Essay, Research Paper Carl Pauling Carl Pauling was born Feb. 28, 1901 in Portland Oreg. He has made major contributions in structural chemistry and molecular biology. Linus Pauling became interested in biological molecules, and he preformed magnetic studies on oxygen-carrying hemoglobin molecules with C.
Biology Essay Research Paper Why is knowledge
Biology Essay, Research Paper Why is knowledge of chemistry important to biology? Maier, Scott Advanced biology 10/7/99 Biology is the study of all living things and chemistry is the study of chemicals and their interactions. So, how are they related?
Apple Cider Essay Research Paper The Young
Apple Cider Essay, Research Paper The Young Students Learning Library defines fermentation as a chemical change caused by many different kinds of bacteria, molds, and yeasts. These different types of fermentation give off certain chemicals. The chemicals found in most are enzymes. An enzyme is a chemical compound that makes the chemical reaction faster.