Oxidation-Reduction (Redox) Reactions
... Identifying Redox Reactions First determine oxidation numbers of each species in the reaction and then identify the oxidation or reduction processes A. Oxidation and reduction occur together. Whenever an atom loses electrons (is oxidized) another atom must gain electrons (be reduced). B. Reducing Ag ...
... Identifying Redox Reactions First determine oxidation numbers of each species in the reaction and then identify the oxidation or reduction processes A. Oxidation and reduction occur together. Whenever an atom loses electrons (is oxidized) another atom must gain electrons (be reduced). B. Reducing Ag ...
Topic 7b Redox notes
... CuO is losing oxygen and so is reduced. This happens when heated with hydrogen. Hydrogen has reduced CuO to copper metal and has itself gained oxygen and therefore been oxidised. You could also consider the oxidation states of each substance and would draw the same conclusion. ...
... CuO is losing oxygen and so is reduced. This happens when heated with hydrogen. Hydrogen has reduced CuO to copper metal and has itself gained oxygen and therefore been oxidised. You could also consider the oxidation states of each substance and would draw the same conclusion. ...
Ratios - SchoolFusion
... numbers by the greatest common divisor (GCD) or by common divisors (factors) until you can’t divide anymore. Example: Write the ratio of bats to balls in simplest form. ...
... numbers by the greatest common divisor (GCD) or by common divisors (factors) until you can’t divide anymore. Example: Write the ratio of bats to balls in simplest form. ...
Worked out problems
... Analyze: We are given an incomplete, unbalanced (skeleton) equation for a redox reaction occurring in acidic solution and asked to complete and balance it. Plan: We use the half-reaction procedure we just learned. Solve: Step 1: We divide the equation into two halfreactions: Step 2:We balance each h ...
... Analyze: We are given an incomplete, unbalanced (skeleton) equation for a redox reaction occurring in acidic solution and asked to complete and balance it. Plan: We use the half-reaction procedure we just learned. Solve: Step 1: We divide the equation into two halfreactions: Step 2:We balance each h ...
Sample Exercise 20.1 Identifying Oxidizing and Reducing Agents
... Analyze: We are given an incomplete, unbalanced (skeleton) equation for a redox reaction occurring in acidic solution and asked to complete and balance it. Plan: We use the half-reaction procedure we just learned. Solve: Step 1: We divide the equation into two halfreactions: Step 2:We balance each h ...
... Analyze: We are given an incomplete, unbalanced (skeleton) equation for a redox reaction occurring in acidic solution and asked to complete and balance it. Plan: We use the half-reaction procedure we just learned. Solve: Step 1: We divide the equation into two halfreactions: Step 2:We balance each h ...
Summer Study Assignment – Honors Chem 2/AP Chemistry
... must be obtained in the diet is methionine. What is the percentage of carbon, nitrogen, and sulfur in this amino acid if the formula of methionine is CH3SCH2CH2CHNH2COOH? 105. Ammonia is produced by the reaction of nitrogen and hydrogen according to this balanced equation: N2 (g) + 3 H2 (g) 2 NH3 ...
... must be obtained in the diet is methionine. What is the percentage of carbon, nitrogen, and sulfur in this amino acid if the formula of methionine is CH3SCH2CH2CHNH2COOH? 105. Ammonia is produced by the reaction of nitrogen and hydrogen according to this balanced equation: N2 (g) + 3 H2 (g) 2 NH3 ...
Tests
... Nuclear ________ is a process that occurs in the sun and stars. Alchemy contributed to the production of _________. The first attempts to classify substances were made by ____________. Iron is caused to rust by exposure to ________ and ____________. ...
... Nuclear ________ is a process that occurs in the sun and stars. Alchemy contributed to the production of _________. The first attempts to classify substances were made by ____________. Iron is caused to rust by exposure to ________ and ____________. ...
Chemical Equilibrium
... The concentrations of the reacting species in the condensed phase are expressed in M. In the gaseous phase, the concentrations can be expressed in M or in atm. ...
... The concentrations of the reacting species in the condensed phase are expressed in M. In the gaseous phase, the concentrations can be expressed in M or in atm. ...
Glossary: Chemical bonds
... CA, CB, CC, CD are concentrations of gaseous or dissolved substances. Chemical equilibrium is a dynamic one, so it can be shifted according to le Chateleu’s principle (principle of counteraction): if an equilibrium system is affected by any factor (change in concentrations, pressure or temperature), ...
... CA, CB, CC, CD are concentrations of gaseous or dissolved substances. Chemical equilibrium is a dynamic one, so it can be shifted according to le Chateleu’s principle (principle of counteraction): if an equilibrium system is affected by any factor (change in concentrations, pressure or temperature), ...
Chapter 14: Gases
... Avogadro’s Principle • The size of large krypton atoms and small helium atoms have no influence on the volume occupied by a fixed number of particles. • Avogadro’s Principle: states that equal volumes of gases at the same temperature and pressure contain equal number of particles. ...
... Avogadro’s Principle • The size of large krypton atoms and small helium atoms have no influence on the volume occupied by a fixed number of particles. • Avogadro’s Principle: states that equal volumes of gases at the same temperature and pressure contain equal number of particles. ...
Photocatalytic reduction of aromatic azides to amines using CdS
... protonated, abstract a hydrogen atom from surface groups, or accept a second electron to give a doubly charged species. However, a rapid loss of a N2 to generate a nitrene radical anion (C) is more likely.29 Nitrene radical anion C may subsequently be protonated to give an aminyl radical (D) or abst ...
... protonated, abstract a hydrogen atom from surface groups, or accept a second electron to give a doubly charged species. However, a rapid loss of a N2 to generate a nitrene radical anion (C) is more likely.29 Nitrene radical anion C may subsequently be protonated to give an aminyl radical (D) or abst ...
Dr David`s Chemistry Test Answers
... not reversible. Similarly, the reaction of silver nitrate solution with sodium chloride solution is a reaction which only goes one way (ie, left to right). This produces a white precipitate of silver chloride and providing the reactants are mixed in equimolar amounts all of the silver ions and chlor ...
... not reversible. Similarly, the reaction of silver nitrate solution with sodium chloride solution is a reaction which only goes one way (ie, left to right). This produces a white precipitate of silver chloride and providing the reactants are mixed in equimolar amounts all of the silver ions and chlor ...
LABORATORY MANUAL FOR GENERAL CHEMISTRY I
... 2 Quantitative- to determine the amount of a measurable change in mass, volume, or temperature, for example, including the time rate of change on processes for which the qualitative data are already known. It is much easier to appreciate and comprehend the science of Chemistry, if you actually parti ...
... 2 Quantitative- to determine the amount of a measurable change in mass, volume, or temperature, for example, including the time rate of change on processes for which the qualitative data are already known. It is much easier to appreciate and comprehend the science of Chemistry, if you actually parti ...
ism ismismismismismrapidrevisionquestionsismismismismismism
... (i) Combination between nitrogen and hydrogen to form ammonia in the presence of iron catalyst in Haber’s process. Fe N2 + 3H2 2NH3 (ii) Zeolites catalyst ZSM-5 is used to convert alcohol to gasoline by dehydration. (iii) The enzyme zymase converts glucose into ethyl alcohol and carbon dioxide. Zyma ...
... (i) Combination between nitrogen and hydrogen to form ammonia in the presence of iron catalyst in Haber’s process. Fe N2 + 3H2 2NH3 (ii) Zeolites catalyst ZSM-5 is used to convert alcohol to gasoline by dehydration. (iii) The enzyme zymase converts glucose into ethyl alcohol and carbon dioxide. Zyma ...
12 The Gaseous State of Matter Chapter Outline Properties of Gases
... Equal volumes of different gases at constant T and P contain the same number of molecules. ...
... Equal volumes of different gases at constant T and P contain the same number of molecules. ...
664
... Nitrous oxide can be analyzed by GC on a molecular sieve column using a thermal conductivity detector and helium as carrier gas. It may be identified by GC/MS from its mass spectra. The molecular ion is 44. Also, it can be oxidized to NO and identified by the brown-ring test, using FeSO4 solution. ( ...
... Nitrous oxide can be analyzed by GC on a molecular sieve column using a thermal conductivity detector and helium as carrier gas. It may be identified by GC/MS from its mass spectra. The molecular ion is 44. Also, it can be oxidized to NO and identified by the brown-ring test, using FeSO4 solution. ( ...
EIT Review S2012 Part 2 Dr. J. Mack CSUS Department of Chemistry
... How many liters of hydrogen gas are required to react with 12.7 L of nitrogen to produce ammonia if the reaction occurs in a closed container at constant pressure? 3 H2(g) + N2(g) → 2 NH3(g) ...
... How many liters of hydrogen gas are required to react with 12.7 L of nitrogen to produce ammonia if the reaction occurs in a closed container at constant pressure? 3 H2(g) + N2(g) → 2 NH3(g) ...
Answers to Selected Exercises
... maximum number of product moles resulting from a chemical reaction; any other reactant is an excess reactant. (b) The ...
... maximum number of product moles resulting from a chemical reaction; any other reactant is an excess reactant. (b) The ...
IPC: Essential Learning Outcomes By the IPC District Team
... • Apply mathematical concepts for calculating formula mass, molar mass, and percent composition for compounds. ...
... • Apply mathematical concepts for calculating formula mass, molar mass, and percent composition for compounds. ...
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Stoichiometry
Stoichiometry /ˌstɔɪkiˈɒmɨtri/ is the calculation of relative quantities of reactants and products in chemical reactions.Stoichiometry is founded on the law of conservation of mass where the total mass of the reactants equals the total mass of the products leading to the insight that the relations among quantities of reactants and products typically form a ratio of positive integers. This means that if the amounts of the separate reactants are known, then the amount of the product can be calculated. Conversely, if one reactant has a known quantity and the quantity of product can be empirically determined, then the amount of the other reactants can also be calculated.As seen in the image to the right, where the balanced equation is:CH4 + 2 O2 → CO2 + 2 H2O.Here, one molecule of methane reacts with two molecules of oxygen gas to yield one molecule of carbon dioxide and two molecules of water. Stoichiometry measures these quantitative relationships, and is used to determine the amount of products/reactants that are produced/needed in a given reaction. Describing the quantitative relationships among substances as they participate in chemical reactions is known as reaction stoichiometry. In the example above, reaction stoichiometry measures the relationship between the methane and oxygen as they react to form carbon dioxide and water.Because of the well known relationship of moles to atomic weights, the ratios that are arrived at by stoichiometry can be used to determine quantities by weight in a reaction described by a balanced equation. This is called composition stoichiometry.Gas stoichiometry deals with reactions involving gases, where the gases are at a known temperature, pressure, and volume and can be assumed to be ideal gases. For gases, the volume ratio is ideally the same by the ideal gas law, but the mass ratio of a single reaction has to be calculated from the molecular masses of the reactants and products. In practice, due to the existence of isotopes, molar masses are used instead when calculating the mass ratio.