9.2 Oxidation Numbers
... reading a chemical equation does not always tell us whether oxidation and reduction have occurred, so chemists have developed a numerical system to help identify a reaction as redox. For redox reactions, this system also shows us which element is oxidized, which is reduced, what the oxidizing agent ...
... reading a chemical equation does not always tell us whether oxidation and reduction have occurred, so chemists have developed a numerical system to help identify a reaction as redox. For redox reactions, this system also shows us which element is oxidized, which is reduced, what the oxidizing agent ...
Redox Balancing Worksheet
... The oxidation number of a monatomic ion is equal to its charge. Thus the oxidation number of Cl in the Clion is -1, that for Mg in the Mg+2 ion is +2, and that for oxygen in O2- ion is -2. The sum of the oxidation numbers in a compound is zero if neutral, or equal to the charge if an ion. The oxidat ...
... The oxidation number of a monatomic ion is equal to its charge. Thus the oxidation number of Cl in the Clion is -1, that for Mg in the Mg+2 ion is +2, and that for oxygen in O2- ion is -2. The sum of the oxidation numbers in a compound is zero if neutral, or equal to the charge if an ion. The oxidat ...
chapter4-bur.2917051..
... The forces holding an ionic compound together are the strong electrical attraction that exists between cations and anions. It is therefore somewhat surprising that ionic compounds will dissolve in water. The reason some ionic compounds will dissolve in water is because the water molecules have a par ...
... The forces holding an ionic compound together are the strong electrical attraction that exists between cations and anions. It is therefore somewhat surprising that ionic compounds will dissolve in water. The reason some ionic compounds will dissolve in water is because the water molecules have a par ...
W1 WORKSHOP ON STOICHIOMETRY
... Metals, ionic compounds, some non-metallic elements and many inorganic compounds consist of “infinite” lattices of regularly repeating units. The term “molecular weight” has no meaning when applied to such compounds, there being no molecules. For these compounds, the term formula weight should be us ...
... Metals, ionic compounds, some non-metallic elements and many inorganic compounds consist of “infinite” lattices of regularly repeating units. The term “molecular weight” has no meaning when applied to such compounds, there being no molecules. For these compounds, the term formula weight should be us ...
CHM2045 Exam 2 Review Questions Fall 2015
... 13) Select the false statements below. A) In any given atom, a l = 2 subshell can accommodate up to 5 electrons that have ms = –1/2 B) The n = 1 shell of any given atom can accommodate up to 2 electrons C) The following set of quantum numbers is allowed: n = 4, l = 2, ml = −2, ms = +1/2 D) The n = 4 ...
... 13) Select the false statements below. A) In any given atom, a l = 2 subshell can accommodate up to 5 electrons that have ms = –1/2 B) The n = 1 shell of any given atom can accommodate up to 2 electrons C) The following set of quantum numbers is allowed: n = 4, l = 2, ml = −2, ms = +1/2 D) The n = 4 ...
Stoichiometry Notes
... Most of the time when we have a reaction, we add too much of one reactant or another. Because of this, onlyone of the reactants is completely used up and the other will have some remaining. In order to solve stoichiometric problems, the reactant that we run out of first (called the limiting reagent) ...
... Most of the time when we have a reaction, we add too much of one reactant or another. Because of this, onlyone of the reactants is completely used up and the other will have some remaining. In order to solve stoichiometric problems, the reactant that we run out of first (called the limiting reagent) ...
practice spring final exam
... (D) 0 K, 760 atm 36. How much space do 5.7x1028 molecules of oxygen gas occupy? (A) 4227 L (B) 2.1x106 mL (C) 1.53x1051 L (D) 2.1x106 L 37. The mass of one mole of Ca(OH)2 is: (A) 29 g (B) 38 g (C) 57 g (D) 74 g 38. How many moles are in 100 g of O2 gas? (A) 1 mol (B) 1.3 mol (C) 3.1 mol (D) 6.3 mol ...
... (D) 0 K, 760 atm 36. How much space do 5.7x1028 molecules of oxygen gas occupy? (A) 4227 L (B) 2.1x106 mL (C) 1.53x1051 L (D) 2.1x106 L 37. The mass of one mole of Ca(OH)2 is: (A) 29 g (B) 38 g (C) 57 g (D) 74 g 38. How many moles are in 100 g of O2 gas? (A) 1 mol (B) 1.3 mol (C) 3.1 mol (D) 6.3 mol ...
Chapter 4 Student Notes
... Oxidation numbers (or oxidation states) help up keep track of electrons during chemical reactions. Oxidation numbers are assigned to atoms using specific rules: 1. For an atom in its elemental form, the oxidation number is always zero. 2. For any monatomic ion, the oxidation number equals the charge ...
... Oxidation numbers (or oxidation states) help up keep track of electrons during chemical reactions. Oxidation numbers are assigned to atoms using specific rules: 1. For an atom in its elemental form, the oxidation number is always zero. 2. For any monatomic ion, the oxidation number equals the charge ...
Photodissociation of methane: Exploring potential energy surfaces
... starting point for the MR-SDCI calculations兲, also gives these two structures, with almost the same geometry parameters. However, the C2v structure does not exist at the MR-SDCI level. This can be explained as follows. The C2v minimum is located on the CH4 → CH2共b̃ 1B1兲 + H2 dissociation path, and i ...
... starting point for the MR-SDCI calculations兲, also gives these two structures, with almost the same geometry parameters. However, the C2v structure does not exist at the MR-SDCI level. This can be explained as follows. The C2v minimum is located on the CH4 → CH2共b̃ 1B1兲 + H2 dissociation path, and i ...
Part II
... Stable Molecules versus “Free Radicals” Free radicals – have unpaired electron(s). Atmospheric lifetimes seconds, minutes. e.g., •O-H radical, missing one bond (H), wants to steal one from somewhere. Similar story for •CH3 radical, missing one bond. Or the HO2 radical, H-O-O• These free radicals are ...
... Stable Molecules versus “Free Radicals” Free radicals – have unpaired electron(s). Atmospheric lifetimes seconds, minutes. e.g., •O-H radical, missing one bond (H), wants to steal one from somewhere. Similar story for •CH3 radical, missing one bond. Or the HO2 radical, H-O-O• These free radicals are ...
Stoichiometry – Chapter 9
... 4. The fizz produced when some antacid tablets are dropped into water is created by the production of carbon dioxide during the reaction between sodium bicarbonate and citric acid. 3NaHCO3 + H 3C6 H 5O7 → 3CO 2 + 3H 2O + Na 3C6 H 5O7 Suppose 2.0 grams of sodium bicarbonate and 0.50 g of citric acid ...
... 4. The fizz produced when some antacid tablets are dropped into water is created by the production of carbon dioxide during the reaction between sodium bicarbonate and citric acid. 3NaHCO3 + H 3C6 H 5O7 → 3CO 2 + 3H 2O + Na 3C6 H 5O7 Suppose 2.0 grams of sodium bicarbonate and 0.50 g of citric acid ...
Redox I
... Mg got oxidized. Fe2+ was the oxidizing agent. •Fe goes from an ion to an element: Fe2+ Fe Fe2+ got reduced. Mg was the reducing agent. ...
... Mg got oxidized. Fe2+ was the oxidizing agent. •Fe goes from an ion to an element: Fe2+ Fe Fe2+ got reduced. Mg was the reducing agent. ...
standard enthalpy change of reaction
... When weak acids and bases are involved such as NaHCO3 then CO2(g) may be another product. These reactions release energy to the surroundings so they ...
... When weak acids and bases are involved such as NaHCO3 then CO2(g) may be another product. These reactions release energy to the surroundings so they ...
Computational investigations of the electronic structure of molecular
... methods is mainly due to the size of the compounds which makes multireference calculations prohibitively expensive, but also to make comparisons with previously calculated DFT results. The first chapter presents the basic concepts of electronic structure theory and the chemical properties of the act ...
... methods is mainly due to the size of the compounds which makes multireference calculations prohibitively expensive, but also to make comparisons with previously calculated DFT results. The first chapter presents the basic concepts of electronic structure theory and the chemical properties of the act ...
practice unit #2 exam
... 7. The series of steps that most reactions undergo, from initial reactants to final products, is called the: A. catalytic conversion ...
... 7. The series of steps that most reactions undergo, from initial reactants to final products, is called the: A. catalytic conversion ...
Organic Molecules
... structures containing thousands of atoms! Although carbon is present in all organic compounds, other elements such as hydrogen (H), oxygen (O), nitrogen (N), sulfur (S) and phosphorus (P) are also common in these molecules. Until the early nineteenth century, chemists had managed to make many simple ...
... structures containing thousands of atoms! Although carbon is present in all organic compounds, other elements such as hydrogen (H), oxygen (O), nitrogen (N), sulfur (S) and phosphorus (P) are also common in these molecules. Until the early nineteenth century, chemists had managed to make many simple ...
Water - UFMG
... with a lone pair of electrons) and a hydrogen atom covalently bonded to another electronegative atom (the hydrogen donor) in the same or another molecule (Fig. 4–3). Hydrogen atoms covalently bonded to carbon atoms (which are not electronegative) do not participate in hydrogen bonding. The distincti ...
... with a lone pair of electrons) and a hydrogen atom covalently bonded to another electronegative atom (the hydrogen donor) in the same or another molecule (Fig. 4–3). Hydrogen atoms covalently bonded to carbon atoms (which are not electronegative) do not participate in hydrogen bonding. The distincti ...
1st-Year-ch-wise-test
... (2) The filtration through filter paper is increased by using (a) sintered glass crucible (b) funnel of small stem (b) flutted filter paper (d) filter paper of greater porosity (3) A solvent chosen for crystallization should (a) not react chemically (b) react chemically (c) be expensive (d) dissolve ...
... (2) The filtration through filter paper is increased by using (a) sintered glass crucible (b) funnel of small stem (b) flutted filter paper (d) filter paper of greater porosity (3) A solvent chosen for crystallization should (a) not react chemically (b) react chemically (c) be expensive (d) dissolve ...
Monte Carlo Simulation of Water Radiolysis for
... square distance traveled, l, was calculated according to l = (6Dt)1/2, and the actual distance was extracted from a Gaussian distribution assuming a standard deviation of ±10%. The parameter l distributes around 0.1 nm for t = 10–12 s as shown in Table 3. At the end of each time step, the pair of sp ...
... square distance traveled, l, was calculated according to l = (6Dt)1/2, and the actual distance was extracted from a Gaussian distribution assuming a standard deviation of ±10%. The parameter l distributes around 0.1 nm for t = 10–12 s as shown in Table 3. At the end of each time step, the pair of sp ...
MOLES AND CALCULATIONS USING THE MOLE CONCEPT
... 1. A mole is the amount of any substance that contains as many elementary entities as there are atoms in exactly 1.00 g of hydrogen-1. 2. A mole is the amount ... in exactly 12.00 g of carbon-12. 3. 6.02 x 1023 of anything 4. It is important to state the entities involved: atoms, molecules, ions, el ...
... 1. A mole is the amount of any substance that contains as many elementary entities as there are atoms in exactly 1.00 g of hydrogen-1. 2. A mole is the amount ... in exactly 12.00 g of carbon-12. 3. 6.02 x 1023 of anything 4. It is important to state the entities involved: atoms, molecules, ions, el ...
unit (4) calculations and chemical reactions
... 4.6 Classification of Chemical Reactions There is no comprehensive classification scheme that would accommodate all known chemical reactions. One approach is to classify reactions into four types: combination, decomposition, single replacement and double replacement reactions. I) Combination Reacti ...
... 4.6 Classification of Chemical Reactions There is no comprehensive classification scheme that would accommodate all known chemical reactions. One approach is to classify reactions into four types: combination, decomposition, single replacement and double replacement reactions. I) Combination Reacti ...
H 2 O
... oxidize or reduce • Although both oxidizing and reducing radicals are produced in solvents by ionizing radiation, one or the other can usually be selectively scavenged. eaq + N2O N2 + O ...
... oxidize or reduce • Although both oxidizing and reducing radicals are produced in solvents by ionizing radiation, one or the other can usually be selectively scavenged. eaq + N2O N2 + O ...