Double-Replacement Reactions - Fort Thomas Independent Schools
... • In double-replacement reactions, the ions of two compounds exchange places in an aqueous solution to form two new compounds. • One of the compounds formed is usually a precipitate, an insoluble gas that bubbles out of the solution, or a molecular compound, usually water. • The other compound is of ...
... • In double-replacement reactions, the ions of two compounds exchange places in an aqueous solution to form two new compounds. • One of the compounds formed is usually a precipitate, an insoluble gas that bubbles out of the solution, or a molecular compound, usually water. • The other compound is of ...
Exam 2-f06 - Clayton State University
... 2.) Which one of the following statements is false? a.) In order for a reaction to occur, reactant molecules must collide with each other. b.) A catalyst alters the rate of a reaction and is neither a product nor a reactant in the overall equation. c.) According to collision theory a three body coll ...
... 2.) Which one of the following statements is false? a.) In order for a reaction to occur, reactant molecules must collide with each other. b.) A catalyst alters the rate of a reaction and is neither a product nor a reactant in the overall equation. c.) According to collision theory a three body coll ...
Reactive Materials - NC State University
... Reactive liquids are chemicals that react vigorously with moisture or oxygen or other substances. Reactive solids are chemicals that react vigorously with moisture and other substances. The most common reactive solids include sodium, potassium and lithium metals, acid anhydrides and acid chlorides. ...
... Reactive liquids are chemicals that react vigorously with moisture or oxygen or other substances. Reactive solids are chemicals that react vigorously with moisture and other substances. The most common reactive solids include sodium, potassium and lithium metals, acid anhydrides and acid chlorides. ...
summerpp_4
... The charge the atom would have in a molecule (or an ionic compound) if electrons were completely transferred. 1. Free elements (uncombined state) have an oxidation number of zero. ...
... The charge the atom would have in a molecule (or an ionic compound) if electrons were completely transferred. 1. Free elements (uncombined state) have an oxidation number of zero. ...
Chapter 4
... The charge the atom would have in a molecule (or an ionic compound) if electrons were completely transferred. 1. Free elements (uncombined state) have an oxidation number of zero. ...
... The charge the atom would have in a molecule (or an ionic compound) if electrons were completely transferred. 1. Free elements (uncombined state) have an oxidation number of zero. ...
final exam review chapter 1-4
... 5. If you have 4 g NaOH, and 10 g HBr, what is the limiting reagent and how much salt is produced? In lab if you produce1 g salt, what is the percent yield? ...
... 5. If you have 4 g NaOH, and 10 g HBr, what is the limiting reagent and how much salt is produced? In lab if you produce1 g salt, what is the percent yield? ...
document
... electrons in their outer electron shell. 7. Polyatomic Ion F. A multiplier. It is used to balance equations. 8. Synthesis Reaction G. A reaction in which two reactant compounds switch ions. 9. Decomposition Reaction H. This number tells the number of atoms of one element in a 10. Single Displacement ...
... electrons in their outer electron shell. 7. Polyatomic Ion F. A multiplier. It is used to balance equations. 8. Synthesis Reaction G. A reaction in which two reactant compounds switch ions. 9. Decomposition Reaction H. This number tells the number of atoms of one element in a 10. Single Displacement ...
The collision theory of reactions
... a) Write an equation to show the formation of HO radicals from O atoms and water. H2O(g) + O(g) HO + HO b) Write equations to show how nitrogen monoxide can destroy ozone in a catalytic cycle. NO + O3 NO2 + O2 NO2 + O NO + O2 SL A4: The CFC story In the early 1970s there was concern about je ...
... a) Write an equation to show the formation of HO radicals from O atoms and water. H2O(g) + O(g) HO + HO b) Write equations to show how nitrogen monoxide can destroy ozone in a catalytic cycle. NO + O3 NO2 + O2 NO2 + O NO + O2 SL A4: The CFC story In the early 1970s there was concern about je ...
Nature of chemical reaction - Environmental-Chemistry
... and under same condition, products get decomposed into reacants. “A chemical equilibrium is a state in which a reversible chemical reaction is proceeding in both forward and reverse direction with equal rate at given set of conditions.” Foe example, CaCO3 ↔ CaO + CO2 In this reversible chemical reac ...
... and under same condition, products get decomposed into reacants. “A chemical equilibrium is a state in which a reversible chemical reaction is proceeding in both forward and reverse direction with equal rate at given set of conditions.” Foe example, CaCO3 ↔ CaO + CO2 In this reversible chemical reac ...
Chapter 7 Chemical Reactions
... There are millions of compounds that will produce endless chemical reactions, therefore not all chemical reactions can be carried out in the laboratory A system is used to classify chemical reactions, which allows chemist to recognize patterns and predict the products of reactions One of these ...
... There are millions of compounds that will produce endless chemical reactions, therefore not all chemical reactions can be carried out in the laboratory A system is used to classify chemical reactions, which allows chemist to recognize patterns and predict the products of reactions One of these ...
Nitrogen and its compounds - kcpe-kcse
... Laboratory Preparation Ammonia can be prepared by heating an ammonium salt with an alkali . 2NH4Cl (s) + Ca(OH)2 (s) 2NH3 (g) + CaCl2 (aq) + 2H2O (l) ...
... Laboratory Preparation Ammonia can be prepared by heating an ammonium salt with an alkali . 2NH4Cl (s) + Ca(OH)2 (s) 2NH3 (g) + CaCl2 (aq) + 2H2O (l) ...
Type of Chemical Reactions Lab
... for the conduction of electricity and the indicator just shows us that a reaction is taking place that changes pH. The reaction would take place without either of these present… we just wouldn’t know it. b) Then write the state symbols for each chemical (s, l, g, aq). c) Then balance the equation us ...
... for the conduction of electricity and the indicator just shows us that a reaction is taking place that changes pH. The reaction would take place without either of these present… we just wouldn’t know it. b) Then write the state symbols for each chemical (s, l, g, aq). c) Then balance the equation us ...
Activity Series Unit
... Explain 1: Why do some ions interact with other in a reaction while others do not? 4. Consider the reactions that took place between the metals and hydrochloric acid. Write a chemical equation of each reaction that took place. (Be sure to write each species as it exists in solution) This is called ...
... Explain 1: Why do some ions interact with other in a reaction while others do not? 4. Consider the reactions that took place between the metals and hydrochloric acid. Write a chemical equation of each reaction that took place. (Be sure to write each species as it exists in solution) This is called ...
Gas Stoichiometry Worksheet
... Calculate the volume of NH3 (in liters) needed at 20ºC and 25.0 atm to react with 150 kg of H2SO4. ...
... Calculate the volume of NH3 (in liters) needed at 20ºC and 25.0 atm to react with 150 kg of H2SO4. ...
sch3u unit 1 test: matter
... 25. __ Gold is a highly reactive metal. 26. ___ Barium hydroxide produced in a double displacement reaction will precipitate out. 27. ___ Hydrogen is in the activity series because it classifies as a metal. SECTION B: THINKING/INQUIRY (30 marks) 1. Draw the following Lewis symbols/Lewis structures ( ...
... 25. __ Gold is a highly reactive metal. 26. ___ Barium hydroxide produced in a double displacement reaction will precipitate out. 27. ___ Hydrogen is in the activity series because it classifies as a metal. SECTION B: THINKING/INQUIRY (30 marks) 1. Draw the following Lewis symbols/Lewis structures ( ...
+ CuO Cu + O
... 7- Zinc reacts with dilute hydrochloric acid and …………………………… salt is formed. 8- The reaction between acid and alkali gives ………………………. And ………………………. And this reaction is called ……………………………. 9- Clear lime water turbid on passing ……………………………. Gas through it 10- On adding silver nitrate solution to sod ...
... 7- Zinc reacts with dilute hydrochloric acid and …………………………… salt is formed. 8- The reaction between acid and alkali gives ………………………. And ………………………. And this reaction is called ……………………………. 9- Clear lime water turbid on passing ……………………………. Gas through it 10- On adding silver nitrate solution to sod ...
Unit 2 - Calderglen High School
... (c) Aldehydes can also be formed by the reaction of some alcohols with copper(II) oxide. Name the type of alcohol that would react with copper(II) oxide to form an aldehyde. ...
... (c) Aldehydes can also be formed by the reaction of some alcohols with copper(II) oxide. Name the type of alcohol that would react with copper(II) oxide to form an aldehyde. ...
NC Exam Questions - Rosshall Academy
... In the reaction, the carbon atom next to the carbonyl functional group of one molecule forms a bond with the carbonyl carbon atom of the second molecule. (a) Draw a structural formula for the product formed when propanone is used instead of ethanal in this type of reaction. (1) (b) Name an aldehyde ...
... In the reaction, the carbon atom next to the carbonyl functional group of one molecule forms a bond with the carbonyl carbon atom of the second molecule. (a) Draw a structural formula for the product formed when propanone is used instead of ethanal in this type of reaction. (1) (b) Name an aldehyde ...
No Slide Title - McMaster Chemistry
... In Br nsted acid-base reactions - H+ transfer occurs from STRONGER to WEAKER congugate acid-base pair 1A03/1E03 Types of Reactions (2) ...
... In Br nsted acid-base reactions - H+ transfer occurs from STRONGER to WEAKER congugate acid-base pair 1A03/1E03 Types of Reactions (2) ...
No Slide Title
... 6. The sum of the oxidation numbers of all the atoms in a molecule or ion is equal to the charge on the molecule or ion. 7. Oxidation numbers do not have to be integers. Oxidation number of oxygen in the superoxide ion, O2-, is -½. ...
... 6. The sum of the oxidation numbers of all the atoms in a molecule or ion is equal to the charge on the molecule or ion. 7. Oxidation numbers do not have to be integers. Oxidation number of oxygen in the superoxide ion, O2-, is -½. ...
Chapter 4 - Reactions in Aqueous Solutions
... 6. The sum of the oxidation numbers of all the atoms in a molecule or ion is equal to the charge on the molecule or ion. 7. Oxidation numbers do not have to be integers. Oxidation number of oxygen in the superoxide ion, O2-, is -½. ...
... 6. The sum of the oxidation numbers of all the atoms in a molecule or ion is equal to the charge on the molecule or ion. 7. Oxidation numbers do not have to be integers. Oxidation number of oxygen in the superoxide ion, O2-, is -½. ...
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.