Quantitative Separation Techniques of a Mixture of C10H8, Nacl and Sio2
Resolving and Determining the Percentages of Naphthalene, NaCl and SiO2 in a Mixture with the use of Separation Techniques
Castro, Sarleen G.* Cid, John Emmanuel V., Clemente, Christian Joy G.
Group 5, 1CHEM,
Department of Chemistry, College of Science,
University of Santo Tomas,
España, Manila, 1015
August 24, 2012
Abstract
A mixture can be homogenous or heterogenous, depending if the mixture has been uniform throughout the mixture or not. One of the objectives is to separate C10H8, NaCl and SiO2, and determine their percentages in the mixture. Since the mixture was not chemically combined, they can be separated by physical means. One can use a variety of techniques such as sublimation, selective dissolution, filtration or evaporation. As a result, the mixture contained 9.51% of C10H8, 16.2% of NaCl, and 60.40% SiO2.
Introduction
A mixture is a combination of two or more pure substances in which each substance retains its own composition and properties. One easily recognized type of mixture is called a heterogenous mixture. Its portions contain different recognizable properties and are not uniform throughout the mixture. Another kind of mixture would be one with uniform properties throughout the mixture. It is called a homogenous mixture, also known as a solution (Whitten, 2011).
In this experiment, a mixture of C10H8, NaCl and SiO2 is involved. Since the components in this experiment are not chemically combined, they can be separated by simple physical means such as sublimation, selective dissolution, filtration and evaporation. Components can be separated based on the differences in their physical and chemical properties (Chang, 2008).
Sublimation is a process by which the molecules can escape directly from the solid to enter the gaseous state, bypassing the liquid state (Hein & Arena, 2011). Difference in vapor pressure allows one to sublime from the rest of the mixture. Vapor pressure is the pressure in the gaseous state (Joesten & Hogg, 2011). It is
Castro, Sarleen G.* Cid, John Emmanuel V., Clemente, Christian Joy G.
Group 5, 1CHEM,
Department of Chemistry, College of Science,
University of Santo Tomas,
España, Manila, 1015
August 24, 2012
Abstract
A mixture can be homogenous or heterogenous, depending if the mixture has been uniform throughout the mixture or not. One of the objectives is to separate C10H8, NaCl and SiO2, and determine their percentages in the mixture. Since the mixture was not chemically combined, they can be separated by physical means. One can use a variety of techniques such as sublimation, selective dissolution, filtration or evaporation. As a result, the mixture contained 9.51% of C10H8, 16.2% of NaCl, and 60.40% SiO2.
Introduction
A mixture is a combination of two or more pure substances in which each substance retains its own composition and properties. One easily recognized type of mixture is called a heterogenous mixture. Its portions contain different recognizable properties and are not uniform throughout the mixture. Another kind of mixture would be one with uniform properties throughout the mixture. It is called a homogenous mixture, also known as a solution (Whitten, 2011).
In this experiment, a mixture of C10H8, NaCl and SiO2 is involved. Since the components in this experiment are not chemically combined, they can be separated by simple physical means such as sublimation, selective dissolution, filtration and evaporation. Components can be separated based on the differences in their physical and chemical properties (Chang, 2008).
Sublimation is a process by which the molecules can escape directly from the solid to enter the gaseous state, bypassing the liquid state (Hein & Arena, 2011). Difference in vapor pressure allows one to sublime from the rest of the mixture. Vapor pressure is the pressure in the gaseous state (Joesten & Hogg, 2011). It is
References: 1. Chang, R. (2008). General Chemistry The Essential Concepts: 5th Edition. USA: McGrawHill, p. 7-8 2. Hein, M. & Arena, S. (2011). Foundations of College Chemistry. USA: John Wiley & Sons, Inc., p. 291-293 3. Joesten, M. & Hogg, J. (2011). Chem In Your World: Student Edition. USA: Brooks/Cole, p. 94-95 4. Stoker, H. S. (2010). General, Organic and Biological Chemistry: 5th Edition. USA: Brooks/Cole, p. 177, 261-262 5. Whitten, K. (2010). Chemistry: 9th Edition. USA: Brooks/Cole, p.13, 993