Second Semester Notes 09-10
... Properties: Have luster (shiny), good conductors of heat and electricity, malleable ( able to be pounded into sheets), ductile (able to be pulled into a wire), tend to lose electrons in chemical reactions, most are solids ...
... Properties: Have luster (shiny), good conductors of heat and electricity, malleable ( able to be pounded into sheets), ductile (able to be pulled into a wire), tend to lose electrons in chemical reactions, most are solids ...
File
... 1. What effect does increasing the concentration have on rates of reactions? a. Increases the number of collisions b. Increases the energy with which molecules collide c. Both a and b d. None of the above 2. Which of the following is not true about the effect of a catalyst a. Permit reactions to pro ...
... 1. What effect does increasing the concentration have on rates of reactions? a. Increases the number of collisions b. Increases the energy with which molecules collide c. Both a and b d. None of the above 2. Which of the following is not true about the effect of a catalyst a. Permit reactions to pro ...
The Basics - I`m a faculty member, and I need web space. What
... • The mole ratios can be obtained from the coefficients in the balanced chemical equation. • What are the mole ratios in this problem? • Mole ratios can be used as conversion factors to predict the amount of any reactant or product involved in a reaction if the amount of another reactant and/or prod ...
... • The mole ratios can be obtained from the coefficients in the balanced chemical equation. • What are the mole ratios in this problem? • Mole ratios can be used as conversion factors to predict the amount of any reactant or product involved in a reaction if the amount of another reactant and/or prod ...
Chapter 1 - TamAPChemistryHart
... Which of the following compounds should produce the highest pH as a 0.05 M solution: pyridine, methylamine, or nitrous acid? (methylamine) ...
... Which of the following compounds should produce the highest pH as a 0.05 M solution: pyridine, methylamine, or nitrous acid? (methylamine) ...
ppt - UCLA Chemistry and Biochemistry
... 1) Solve exactly using quadratic equation 2) Solve by approximation 3) Solve by successive approximation if 2 doesn’t work ...
... 1) Solve exactly using quadratic equation 2) Solve by approximation 3) Solve by successive approximation if 2 doesn’t work ...
6CH02 - MPPE
... SECTION A Answer ALL the questions in this section. You should aim to spend no more than 20 minutes on this section. For each question, select one answer from A to D and put a cross in the box . and then mark your new answer with If you change your mind, put a line through the box a cross . 1 The c ...
... SECTION A Answer ALL the questions in this section. You should aim to spend no more than 20 minutes on this section. For each question, select one answer from A to D and put a cross in the box . and then mark your new answer with If you change your mind, put a line through the box a cross . 1 The c ...
Aqueous Reactions
... Aqueous reactions are reactions that take place in water. To understand them, it is important to understand how compounds behave in water. Some compounds are electrolytes- they dissociate into separate ions in water. However, not all electrolytes behave the same way. Some are strong electrolytes, an ...
... Aqueous reactions are reactions that take place in water. To understand them, it is important to understand how compounds behave in water. Some compounds are electrolytes- they dissociate into separate ions in water. However, not all electrolytes behave the same way. Some are strong electrolytes, an ...
2011 Exam 2 Key
... NOTE: To receive full credit on problems, you must clearly show all work and your method of determining the answer must be clear. The final answer must be reported to the correct number of significant figures and have the correct units. Questions are written on both sides of each page. The last page ...
... NOTE: To receive full credit on problems, you must clearly show all work and your method of determining the answer must be clear. The final answer must be reported to the correct number of significant figures and have the correct units. Questions are written on both sides of each page. The last page ...
200 Ways to Pass the Chemistry - Home 15-16
... form ions to obtain such a configuration of electrons. Which of the following atoms forms a stable ion that does not have an octet structure? Li F Na Cl 95. Covalent bonds non-metal with non-metal form when two atoms share a pair of electrons. How many covalent bonds are found in a nitrogen (N2) mol ...
... form ions to obtain such a configuration of electrons. Which of the following atoms forms a stable ion that does not have an octet structure? Li F Na Cl 95. Covalent bonds non-metal with non-metal form when two atoms share a pair of electrons. How many covalent bonds are found in a nitrogen (N2) mol ...
Partial Pressures of Gases
... recycle silver by trickling waste solutions containing silver ions over scrap copper. ...
... recycle silver by trickling waste solutions containing silver ions over scrap copper. ...
Name______________________ Period________
... 30. According to the Dual Nature of Light, light acts as a __________________ and a _________________. ...
... 30. According to the Dual Nature of Light, light acts as a __________________ and a _________________. ...
Preparation of spherical DDNP study Liu off on a journey
... Influence of ammonia salt crystals diazotization due in ammonia salt filtration process Amount drained liquor, ammonium salt crystals when stout, filtration fast, do not And then washed with water. Because the sodium picramate reduction is an exothermic reaction, the addition point may be scattered ...
... Influence of ammonia salt crystals diazotization due in ammonia salt filtration process Amount drained liquor, ammonium salt crystals when stout, filtration fast, do not And then washed with water. Because the sodium picramate reduction is an exothermic reaction, the addition point may be scattered ...
AP Chemistry - Chagrin Falls Schools
... **If you are at school during any part of the day that an assignment is due, are on a school field trip, or on a planned absence you are required to hand in the assignment to your teacher on the assigned date. Failure to do so will result in an enforcement of the aforementioned late policies. Also, ...
... **If you are at school during any part of the day that an assignment is due, are on a school field trip, or on a planned absence you are required to hand in the assignment to your teacher on the assigned date. Failure to do so will result in an enforcement of the aforementioned late policies. Also, ...
Chem 150 - Fall 2015 Exam I
... potassium dihydrogen phosphate, and potassium chloride, 28.2 kcal of heat are absorbed from the surroundings per mole of potassium monohydrogen phosphate that reacts. a. If this reaction is carried out in a beaker, how does the beaker feel to the touch (circle one)? ...
... potassium dihydrogen phosphate, and potassium chloride, 28.2 kcal of heat are absorbed from the surroundings per mole of potassium monohydrogen phosphate that reacts. a. If this reaction is carried out in a beaker, how does the beaker feel to the touch (circle one)? ...
PPT Oxidation
... reduced and get oxidized. Here are the two halfreactions from the example: Ag+ ---> Ag Cu ---> Cu2+ • The silver is being reduced, its oxidation number going from +1 to zero. The copper's oxidation number went from zero to +2, so it was oxidized in the reaction. In order to figure out the halfreacti ...
... reduced and get oxidized. Here are the two halfreactions from the example: Ag+ ---> Ag Cu ---> Cu2+ • The silver is being reduced, its oxidation number going from +1 to zero. The copper's oxidation number went from zero to +2, so it was oxidized in the reaction. In order to figure out the halfreacti ...
PPT Oxidation
... reduced and get oxidized. Here are the two halfreactions from the example: Ag+ ---> Ag Cu ---> Cu2+ • The silver is being reduced, its oxidation number going from +1 to zero. The copper's oxidation number went from zero to +2, so it was oxidized in the reaction. In order to figure out the halfreacti ...
... reduced and get oxidized. Here are the two halfreactions from the example: Ag+ ---> Ag Cu ---> Cu2+ • The silver is being reduced, its oxidation number going from +1 to zero. The copper's oxidation number went from zero to +2, so it was oxidized in the reaction. In order to figure out the halfreacti ...
Thursday, March 27, 2008
... What is the safest method for diluting concentrated sulfuric acid with water? 1. add the acid to the water quickly 2. add the water to the acid quickly ...
... What is the safest method for diluting concentrated sulfuric acid with water? 1. add the acid to the water quickly 2. add the water to the acid quickly ...
Complete ionic equation
... Br2 I2 -This is only when they are by themselves! -When other atoms are by themselves they don’t have any subscripts, for example iron is just Fe ...
... Br2 I2 -This is only when they are by themselves! -When other atoms are by themselves they don’t have any subscripts, for example iron is just Fe ...
UNIT 1 - MATTER AND CHEMICAL BONDING
... f) ferrous iodide l) cobalt(III) sulphate 5. Classify each of the following reactions as synthesis, single displacement, double displacement, combustion or decomposition. a) iron + copper(I) nitrate iron(II) nitrate + copper b) phosphorus + oxygen diphosphorus pentoxide c) calcium carbonate ca ...
... f) ferrous iodide l) cobalt(III) sulphate 5. Classify each of the following reactions as synthesis, single displacement, double displacement, combustion or decomposition. a) iron + copper(I) nitrate iron(II) nitrate + copper b) phosphorus + oxygen diphosphorus pentoxide c) calcium carbonate ca ...
Chapter 9 Notes - UIC Department of Chemistry
... Unequal sharing of electrons leads to partial charges on some of the atoms in a molecule. Determination of the formal charges on atoms in a molecule can serve as a check on the reasonableness of the Lewis structure we have drawn. A “good” Lewis structure has: 1) Formal charges as close as possible t ...
... Unequal sharing of electrons leads to partial charges on some of the atoms in a molecule. Determination of the formal charges on atoms in a molecule can serve as a check on the reasonableness of the Lewis structure we have drawn. A “good” Lewis structure has: 1) Formal charges as close as possible t ...
Nomenclature and chemical reactions PPT
... dinitrogen monoxide nitrogen dioxide dinitrogen trioxide dinitrogen tetraoxide ...
... dinitrogen monoxide nitrogen dioxide dinitrogen trioxide dinitrogen tetraoxide ...
Chapter 2. Atoms, Molecules, and Ion
... If two elements can combine to form more than one compound, the masses of one element that combine with a fixed mass of the other element are in ratios of small whole ...
... If two elements can combine to form more than one compound, the masses of one element that combine with a fixed mass of the other element are in ratios of small whole ...
A Classification of AP Chemistry Reactions
... Hydrogen gas, H2, is an effective reducing agent for some metal oxides. - Hydrogen gas is passed over hot copper (II) oxide. CuO + H2 Cu + H2O Electron Transfer Reactions The first general type of redox reactions are simple electron-transfer equations. These do not involve oxygen or oxyanions. The ...
... Hydrogen gas, H2, is an effective reducing agent for some metal oxides. - Hydrogen gas is passed over hot copper (II) oxide. CuO + H2 Cu + H2O Electron Transfer Reactions The first general type of redox reactions are simple electron-transfer equations. These do not involve oxygen or oxyanions. The ...
Lewis acid catalysis
In Lewis acid catalysis of organic reactions, a metal-based Lewis acid acts as an electron pair acceptor to increase the reactivity of a substrate. Common Lewis acid catalysts are based on main group metals such as aluminum, boron, silicon, and tin, as well as many early (titanium, zirconium) and late (iron, copper, zinc) d-block metals. The metal atom forms an adduct with a lone-pair bearing electronegative atom in the substrate, such as oxygen (both sp2 or sp3), nitrogen, sulfur, and halogens. The complexation has partial charge-transfer character and makes the lone-pair donor effectively more electronegative, activating the substrate toward nucleophilic attack, heterolytic bond cleavage, or cycloaddition with 1,3-dienes and 1,3-dipoles.Many classical reactions involving carbon–carbon or carbon–heteroatom bond formation can be catalyzed by Lewis acids. Examples include the Friedel-Crafts reaction, the aldol reaction, and various pericyclic processes that proceed slowly at room temperature, such as the Diels-Alder reaction and the ene reaction. In addition to accelerating the reactions, Lewis acid catalysts are able to impose regioselectivity and stereoselectivity in many cases.Early developments in Lewis acid reagents focused on easily available compounds such as TiCl4, BF3, SnCl4, and AlCl3. The relative strengths of these (and other) Lewis acids may be estimated from NMR spectroscopy by the Childs method or the Gutmann-Beckett method. Over the years, versatile catalysts bearing ligands designed for specific applications have facilitated improvement in both reactivity and selectivity of Lewis acid-catalyzed reactions. More recently, Lewis acid catalysts with chiral ligands have become an important class of tools for asymmetric catalysis.Challenges in the development of Lewis acid catalysis include inefficient catalyst turnover (caused by catalyst affinity for the product) and the frequent requirement of two-point binding for stereoselectivity, which often necessitates the use of auxiliary groups.