StudentShare
Contact Us
Sign In / Sign Up for FREE
Search
Go to advanced search...
Free

Zinc - Essay Example

Cite this document
Summary
INTRODUCTION TO ZINC:
Zinc has its origin form the German word “Zin” which means Tin. Zinc is found in the group IIb in the periodic table. Zinc is a transition metal having a lustrous blue white appearance. …
Download full paper File format: .doc, available for editing
GRAB THE BEST PAPER97% of users find it useful
Zinc
Read Text Preview

Extract of sample "Zinc"

?INTRODUCTION TO ZINC: Zinc has its origin form the German word “Zin” which means Tin. Zinc is found in the group IIb in the periodic table. Zinc is a transition metal having a lustrous blue white appearance. At the ordinary room temperature, the appearance of zinc is crystalline and brittle. But it varies with different temperatures, as the appearance becomes ductile when heated at ranges 110-150 °C. Zinc is a reactive metal that was first discovered in 1746, and the person who discovered zinc was Andreas Marggraf. The symbol of zinc is denoted with “Zn”. Being in the group of transition metals, it is the property of zinc that it conducts electricity and heat. The valence electrons of zinc are present in more than one shell. Being placed in the transition metals, it has several oxidation states. Zinc has hexagonal crystalline structure. The atomic number of zinc is 30. It has the atomic mass of 65.39 a.m.u (atomic mass unit). Zinc has a melting point of 419.58 °C and it has a boiling point of 907.0 ° C. The density of zinc is 7.133 g/cm3. The numbers of neutrons are 30 and then numbers of protons/electrons are 35. ISOTOPES OF NEUTRON: The isotopes are the atoms containing different number of neutrons and same number of protons, responsible for altering total number of nucleons. There are ten isotopes of zinc that are shown in the table below. Half Life Zn-62 9.26 hours Zn-63 38.5 minutes Zn-64 Stable Zn-65 243.8 days Zn-66 Stable Zn-67 Stable Zn-68 Stable Zn-69m 13.76 hours Zn-70 Stable Zn-72 46.5 hours Zinc has two oxidation states and the valence electrons are in s shell. ATOMIC STRUCTURE OF ZINC:- The atomic structure gives us an idea about the structure of atoms and its arrangement. The atomic structure includes atomic radius, atomic size, covalent radius, cross section, and crystal structure. The atomic radius of zinc is 1.53 A°, the atomic volume is 9.2 cm3/mol, the covalent radius is 1.25 A°, cross section of 1.11, and the structure is hexagonal in nature. ELECTRONIC CONFIGURATION OF ZINC:- The electronic configuration tells us that how much electrons are placed in the specific shell. The electronic configuration of zinc is 1s2, 2s2, 2p6, 3s2, 3p6, 3d10, 4s2.This electronic configuration makes the process easier to remove 2 of 4s electrons and easier to form compounds like ZnO, Zncl2 and ZnSO4.  SOURCES OF ZINC:- The annual production of zinc is 5,020,000 tons. It is found in the minerals such as zincite (ZnO), zinc blende (sphalerite) (ZnS), calamine, and franklinite. CHEMICAL PROPERTIES:- Zinc has electronegativity of 1.65 Pauling, Heat of fusion of 7.322 kJ/mol, electron work function of 4.33 eV, it has an electrochemical equivalent of 1.22g/amp-hr, and a valence electron potential of 38.9. PHYSICAL PROPERTIES:- It is hard, brittle, bluish white transition metal. The enthalpy of fusion is 7.32 kJ/mol, enthalpy of atomization is 129.7 kJ/mol, average atomic mass of 65.39 and boiling point of 907° C. COMPOUNDS OF ZINC:- Many compounds of zinc are formed, but ten are discussed over here. 1. Zinc Borate: It is also called as fire brake ZB. Zinc borate has elements containing Zinc, Boron and oxygen. It has a chemical formula 3ZnO. 2B2O3. Its CAS number is 1332-07-6. Its casewell number is 909b. It is white powder. 2. Zinc carbonate: It is also called carbonic acid and zinc spar. It has a formula of ZnCo3, made up of zinc, carbon and oxygen. It has CAS number 3486-35-9. 3. Zinc sulphate: It has oxygen, sulphur and zinc. The formula is ZnsO4. The CAS number is 7733-02-0. Casewell number is 927. It is also called Bonazen having several other synonyms. 4. Zinc chloride: Is formula is ZnCl2. It has elements containing zinc and chlorine. Its CAS number is 7646-85-7. Its casewell number is 910. It is also called as butter of zinc. 5. Zinc Oxide: It has elements zinc and oxygen. Its chemical formula is ZnO2. Its CAS number is 1314-13-2. It casewell number is 920. It is also called as snow white. 6. Zinc stearate: Its formula is Zn(C18H35O2) 2. It has carbon, nitrogen, oxygen and zinc. Its CAS number is 557-05-1. Its casewell number is 926. 7. Zinc acetate: Its formula is Zn(O2CCH3)2. It has zinc, carbon and hydrogen in it. They are colorless solids having a CAS number 557-34-6. 8. Zinc molybdate: It has a formula (ZnMoO4). It has elements containing zinc, molybdenum and oxygen. Its CAS number is 13767-32-3. It has tetragonal structure and it is insoluble in water. 9. Zinc Chromate: It has the elements of zinc, chromium and oxygen. It has a chemical formula ZnCrO4. It has CAS number 13530-65-9. It is insoluble in water. 10. Zinc Phosphate: It has the elements contains zinc, oxygen and phosphate. It has CAS number 7779-90-0. It is inorganic in nature having chemical formula Zn3(PO4)2. USES OF ZINC:- 1. Coatings for steel: One of the most widely used applications for the zinc is that it is used for coating of steel. The reason that this application is widely used is because of the low corrosion rate of zinc compared to the steel. Zinc also gives corrosive protection to iron that is why it is widely used in immersed structure such as ships and pipe lines. Due to this reason, 4 million tons of zinc is used to protect 100 million tons of steel. 2. Buildings and construction: The 2/3 of the coated steel strips that are used in the buildings and construction mainly for roofing and industrial buildings are constructed from zinc use. The windows, doors, and domestic buildings use galvanized steel that are coated with zinc because of its good nature of corrosiveness. 3. Zinc recycling: Zinc is among the effective metals that can be recycled. That is the reason which is very important determining its worldwide usage in zinc plating and other coatings. The zinc scrap is priced according to the content of the zinc present and then it is recycled to be used again by the industries. 4. Zinc use in biology: Definite amount of zinc is very necessary for human as well animals. It is also necessary for bones growth and sexual maturation. And the body needs zinc for food processing as well as growth. 5. Other large scale usages: Zinc has a wide range of usage for which it is widely use. Among these uses includes agricultural applications, for making dry cell batteries, used in rubber industries, for making paints, it is used for making certain chemicals, and it is also use to make TV screens. 6. Copper alloys: Zinc is most widely used to make copper alloys and also in making brass. ZINC COMPOUNDS USES:- 1. Zinc borate: Zinc borate is widely used for wide range of plastics, papers, rubbers, as smoke suppressant and as flame retardant. It also replaces antimony oxide as a synergist. It is also widely used in ceramic industries and in making paints and pigments. 2. Zinc sulphate: It has granular and crystal powder appearance. Zinc sulphate is used as zinc additive in feed processing. It is also used as activator in latex paper. It is also an important fertilizer ingredient. 3. Zinc chloride: The zinc chloride is largely used in making of dry cell batteries. It is used in fluxing for soldering and tanning. It is also used as emulsion breaker in petroleum industry. It is also used as corrosion inhibitor in the cooling towers. 4. Zinc chromate: Zinc chromate is used as a corrosion resisting agent. It is used as anti corrosive barrier in the air craft industry. It is also used for making pigments and also used in paint industry. It is also use for UV resisting proposes. 5. Zinc phosphate: Zinc phosphate is used mainly for lubrication during cold forming, for corrosion resistance, to reduce break in wear on adjacent moving surfaces, it is used for bonding organic coatings to metals. REFERENCES: Stasosphere. (2010). 17. Uses of Zinc. Retrieved from http://chestofbooks.com/crafts/mechanics/Mechanical-Processes/17-Uses-Of-Zinc.html Kenneth L Barbalace (J.K. Barbalace, inc). (2011). Periodic Table of Elements - Common Compounds of Zinc. Retrieved from http://environmentalchemistry.com/yogi/periodic/Zn-compounds.html#Compounds AZoM™. (2011). Zinc and its Uses. Retrieved from http://www.azom.com/Details.asp?ArticleID=749 Lenntech Water treatment & purification Holding B.V. (2009). Zinc-Zn. Retrieved from http://www.lenntech.com/periodic/elements/zn.htm Yinon Bentor. (2009). Periodic Table: Zinc. Retrieved from http://www.chemicalelements.com/elements/zn.html Read More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Zinc Essay Example | Topics and Well Written Essays - 1500 words”, n.d.)
Retrieved from https://studentshare.org/environmental-studies/1413752-zinc
(Zinc Essay Example | Topics and Well Written Essays - 1500 Words)
https://studentshare.org/environmental-studies/1413752-zinc.
“Zinc Essay Example | Topics and Well Written Essays - 1500 Words”, n.d. https://studentshare.org/environmental-studies/1413752-zinc.
  • Cited: 0 times

CHECK THESE SAMPLES OF Zinc

Zinc Requirements for Teenagers and Children

In the paper “Zinc Requirements for Teenagers and Children” the author has conducted a research on Zinc intake among Australian teenagers.... Zinc contributes towards the development of the neurological, reproductive, and immune systems in children.... hellip; According to the author, in the 1960s, the incidence of a severe Zinc deficit resulted in hypogonadism, growth retardation, and delayed sexual maturation.... Zinc deficiency has also been known to result in infections such as diarrhoea, and pneumonia, the delayed healing of wounds, different varieties of skin lesions, and night blindness....
6 Pages (1500 words) Essay

Role of Gender, Race, and Socioeconomic Class in Childhood

While it has been established that more males are affected than females by ADHD, the family environment may be an important factor in the symptom rating.... In a cohort study carried out in Northern Finland on 6,888 15-year olds, results of parental rating scales show that girls fare better in attention problem sub-scale and the rule breaking behavior subscale....
3 Pages (750 words) Essay

Zinc finger proteins

Zinc finger proteins (ZFP) can be conceptualized as protein subunits that are compact in nature and have chains of structured peptides that fold and encompass Zinc ions.... They have many functions within eukaryotic cells such as mediating in binding interactions among proteins and… Their first recognition was as motifs that bind Zinc in a repeated manner having ligands of conserved histidine and cysteine within them....
5 Pages (1250 words) Research Paper

ZnO as the Leading Materials in the World of Optoelectronics, Sensors and Microelectronics

This new found interest in the material has spear-led research and development into novel methods to produce schottky and ohmic contacts.... This paper highlights the… This paper also analyzes the most viable metals and metallization techniques that have been researched.... Both n-type and p-type ZnO schottky and ohmic contacts their behavior, Furthermore, as ZnO films and crystals may be interfaced with a variety of metals to form schottky and ohmic contacts....
16 Pages (4000 words) Research Paper

Reaction of Zinc and Iodine

The physical characteristics of the solution of Zinc and iodine were observed and noted, especially… These observations are correlated with the changes in the composition of the solution as iodine was drawn out of it, and with regard to the iodine as the limiting reagent in the reaction.... The law of This paper details the results of an experiment to produce Zinc iodide from the reaction of Zinc with iodine, making use of the laboratory setup given to investigate aspects of the reaction relating to the conservation of mass, the identification of the limiting reagent, and the observations on the physical characteristics of the solution as it underwent the reaction (Spatafora, 2010; Nuffield Foundation, 2013)....
4 Pages (1000 words) Lab Report

Introduction of Synthesis of Zinc Iodide

du). The experiment aims to illustrate the Law of Conservation of Mass by reacting Zinc metal and iodine to synthesize Zinc Your Full Your Experiment 4: Synthesis of Zinc Iodide Introduction The reaction of two or more reagents, elementalor as compounds, given the right atmospheric and physical conditions is commonly known as chemical synthesis, and is governed by the Law of Conservation of Mass.... The experiment aims to illustrate the Law of Conservation of Mass by reacting Zinc metal and iodine to synthesize Zinc iodide....
1 Pages (250 words) Lab Report

Zinc and Alcohol Metabolism

An adult body contains 2-3 grams of Zinc and are found in all body parts: cells, fluids, bones,… Most of the body's Zinc reserves are found in bones and muscles, while higher concentrations are found in semen and the prostate gland.... Zinc is majorly present in foods rich in proteins, which is absorbed in the ileum and duodenum by the intestinal epithelium The ileum absorbs nearly 3-4 grams of Zinc per day and thus the recommended allowances, daily range from 5mg in infants to between 16 and 19 mg per day for lactating women....
6 Pages (1500 words) Term Paper

Immunologic Means Adapted by Zinc Deficiency to the Blueprint of Therapies

People that are Zinc-deficient experience amplified vulnerability to a range of pathogens.... The immunologic means by which Zinc alters increased vulnerability to infection have been investigated for many decades.... It is apparent that… Zinc is central for usual development as well as the function of cells arbitrating imprecise immunity like neutrophils along with natural killer cells.... Zinc iciency also manipulates development of the acquired immunity by averting the outgrowth along with some functions of T lymphocytes like production Th1 cytokine, activation and B lymphocyte aid....
9 Pages (2250 words) Research Paper
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.
Contact Us