Zinc: Aluminum Alloy
Introduction of Lab 5: Analysis of a Zinc: Aluminum Alloy
The analysis of a metal alloy was designed to learn how to use the Ideal Gas Law (formulas listed below) in a laboratory setting in relevance to acquiring moles of gas created, thus giving us one step closer to finding the molar mass. The importance of the Ideal Gas Law, as well as the other gas laws, is that it signifies the relationship between the properties of an ideal gas. These properties assist in the explanation of the Kinetic Molecular Theory. The Kinetic Molecular Theory consists of postulates describing gas particles moving in constant, rapid motion, having negligible volume due to its size, and having no interactions between particles within the walls of a container.
Although these key principles define gases, however, not all gases behave the same way; this is where real gases come into effect due to taking up space, or having volume, and requiring collusions to occur between one another. Based on the fundamental properties of gases, such as Volume, Temperature, Moles, and Pressure, one must understand the undergoing of the Ideal Gas Law and its valuable significance to Chemistry.
Ideal Gas Law: PV=nRT P= Pressure (atm) V= Volume (L) n= Amount of Gas (mol) T= Temperature (K)
R= Ideal Gas Constant (L atm / mol K)
In order to obtain the average molar mass of either Zinc (Zn) or Aluminum (Al) as well as the percent mass composition of the metal alloy in a chemical single displacement reaction(see chemical equations below), students conducted an experiment in which provided particular measurements to help calculate the Molar Mass (grams per mole) for these such elements and compare it to the theoretical Molar Mass. These measurements include: the volume of Hydrogen gas being produced via water displacement, the temperature of the water (once it displaced), the recorded pressure in the laboratory, and the mass of the “unknown” metal (whether it is Zinc or Aluminum).
Al (s) + HCl (aq)----- AlCl3 (aq) + H2 (g)
Zn (s) + HCl (aq) -----ZnCl2(aq) + H2 (g)
The analysis of a metal alloy was designed to learn how to use the Ideal Gas Law (formulas listed below) in a laboratory setting in relevance to acquiring moles of gas created, thus giving us one step closer to finding the molar mass. The importance of the Ideal Gas Law, as well as the other gas laws, is that it signifies the relationship between the properties of an ideal gas. These properties assist in the explanation of the Kinetic Molecular Theory. The Kinetic Molecular Theory consists of postulates describing gas particles moving in constant, rapid motion, having negligible volume due to its size, and having no interactions between particles within the walls of a container.
Although these key principles define gases, however, not all gases behave the same way; this is where real gases come into effect due to taking up space, or having volume, and requiring collusions to occur between one another. Based on the fundamental properties of gases, such as Volume, Temperature, Moles, and Pressure, one must understand the undergoing of the Ideal Gas Law and its valuable significance to Chemistry.
Ideal Gas Law: PV=nRT P= Pressure (atm) V= Volume (L) n= Amount of Gas (mol) T= Temperature (K)
R= Ideal Gas Constant (L atm / mol K)
In order to obtain the average molar mass of either Zinc (Zn) or Aluminum (Al) as well as the percent mass composition of the metal alloy in a chemical single displacement reaction(see chemical equations below), students conducted an experiment in which provided particular measurements to help calculate the Molar Mass (grams per mole) for these such elements and compare it to the theoretical Molar Mass. These measurements include: the volume of Hydrogen gas being produced via water displacement, the temperature of the water (once it displaced), the recorded pressure in the laboratory, and the mass of the “unknown” metal (whether it is Zinc or Aluminum).
Al (s) + HCl (aq)----- AlCl3 (aq) + H2 (g)
Zn (s) + HCl (aq) -----ZnCl2(aq) + H2 (g)