Chem 17 ▪ General Chemistry Laboratory II Experiment 1 Calorimetry INTRODUCTION Chemical reactions are usually accompanied by the evolution (exothermic reaction) or absorption (endothermic reaction) of heat energy. When measured at constant pressure‚ the heat evolved (qp < 0) or absorbed (qp > 0) is equal to the enthalpy change‚ symbolized by ΔH. ΔH is positive for an endothermic process and negative for an exothermic one. If H f is the enthalpy of the final state and Hi of the initial state
Premium Chemical reaction Thermodynamics Enthalpy
Hydrogen Peroxide & Inorganic Peroxy Compounds Hydrogen Peroxide Hydrogen peroxide (H2O2) is the simplest peroxide (a compound with an oxygen-oxygen single bond). It is also a strong oxidizer. Hydrogen peroxide is a clear liquid‚ slightly more viscous than water. In dilute solution‚ it appears colorless. Reactions Decomposition Hydrogen peroxide decomposes exothermically into water and oxygen gas spontaneously: 2 H2O2 → 2 H2O + O2 This process is thermodynamically favorable. It has
Premium Hydrogen peroxide Oxygen
Chemical Nomenclature refers to the naming systems used with chemical formulas. This worksheet focuses on the most basic chemicals and nomenclature systems. Please read the information concerning each problem set and then attempt the problems associated with that information. The simplest compounds contain just two elements. Sodium chloride‚ NaCl‚ is an example of a binary compound. Several other examples are listed below. Potassium bromide KBr Calcium bromide CaBr2 Lithium fluoride LiF
Premium Oxygen Carbon dioxide Oxide
in the periodic table; also use that information to efficiently find an unknown Halogen. Experimental Procedure: View pages 25-28 in the lab Manuel. Data and Observations: Relative Soluabilites of some Salts in Alkaline Earths | 1 M Na2CO3 | 1M H2SO4 | 1M (NH4)2C2O4 | 1M K2CrO4 & 1M HC2H3O2 | Ca(NO3)2 | 1/2 clear‚ 1/2 Milky | Clear | Milky White | Clear yellow hinge | Ba(NO3)2 | Milky White | Milky White | Milky White | Milky Yellow | Mg(NO3)2 | 1/2 clear‚ 1/2 Milky | Clear
Premium Periodic table Group
oxygen produces pure copper and sulfur dioxide gas” i. CuS + O2 Cu + SO2(g) b. When heated‚ baking soda (sodium hydrogen carbonate) decomposes to form the products sodium carbonate‚ carbon dioxide‚ and water.” i. NaHCO3 Na2CO3 + CO2 + H2O 11. Write and balance equations for the following reactions. a. “Iron metal and chlorine gas react to form solid iron(III) chloride” i. 2FeCl3(s) b. “Solid aluminum carbonate decomposes to form solid aluminum oxide and carbon
Premium Chemical reaction Oxygen Carbon dioxide
CHEMISTRY TOPIC 11 CHEMICAL CALCULATIONS CHEMICAL CALCULATIONS INTRODUCTION The first part of this ‘Chemical Calculations’ topic will help us to work out QUANTITIES involved in a reaction; For example‚ a manufacturer might want to know‚ How much ammonia will I produce from 20 tonnes of nitrogen in the Haber Process? To do these calculations you will need to be familiar with the term Ar (relative atomic mass)‚ Mr‚ Molar mass and Mole. Relative Atomic
Premium Ammonia Nitrogen Atom
Year 11 Module 1 – The Chemical Earth The Earth is made up of a large number of different substances: elements‚ compounds & mixtures We can classify elements & compounds as pure substances. These are always HOMOGENEOUS. Mixtures are not pure substances and can be either homogeneous or HETEROGENEOUS. Pure substances have a fixed composition eg copper metal‚ sulfur‚ carbon dioxide (CO2)‚ methane (CH4). Mixtures have variable composition and can also be separated into its components relatively
Free Atom Chemical bond Chemistry
Why does a soft drink become “flat” faster when it is left open at room temperature compared to when it is left open in the refrigerator? molecules move faster the warmer they are 6. Predict the effect each change has on the solubility of (1) Na2CO3 (s) (2) N2(g). a. increasing the temperature more b. increasing the pressure more c.
Free Concentration Solution Solvent
* Compare the structure of diamond and graphite * How do you perform tollens test for detecting the aldehyde group * What are the limitations of Arrhenius theory * What is head of neutralization * How do u prepare a 0.1m standard na2co3 solution * Describe the method of extraction of magnesium from its ore. * How does the atomic radius vary in period or in a group * Explain the formation of double bond triple bond coordinate covalent bond * Define ionization energy
Premium Chemical bond Atom Periodic table
Lab #2 (Part A‚B) Due date: Oct 5‚ 2010 1 - Theory and mechanism Epoxidation is a reaction of an alkene with a peroxycarboxylic acid (also called peracid) to produce an epoxide product‚ generally performed in inert solvents‚ such as dichloromethane. The epoxide product is a cyclic ether in which the ring contains three atoms. The alkene gains an oxygen from the peracid in a syn fashion. In this experiment‚ R-(－)-carvone is reacting with MCPBA‚ a peracid‚ to produce the epoxide product.
Premium Oxygen Hydrogen Hydrogen peroxide