chemical reactions
... Ba(NO3)2 , are combined an insoluble salt barium chromate, BaCrO4 , is formed. K2CrO4 (aq) + Ba(NO3)2 (aq) BaCrO4 (s) + 2KNO3 (aq) Precipitate These reactions will be further discussed in Chapter 8 ...
... Ba(NO3)2 , are combined an insoluble salt barium chromate, BaCrO4 , is formed. K2CrO4 (aq) + Ba(NO3)2 (aq) BaCrO4 (s) + 2KNO3 (aq) Precipitate These reactions will be further discussed in Chapter 8 ...
Enzymes - stephen fleenor
... performing a hydrolysis reaction compaction of sugar grains into a hard substance dehydration synthesis reactions the association of hydrophobic tails with hydrophilic sugar molecules ...
... performing a hydrolysis reaction compaction of sugar grains into a hard substance dehydration synthesis reactions the association of hydrophobic tails with hydrophilic sugar molecules ...
Matter and Energy
... -atoms found on the reactants side will also be found on the products side. They will be broken apart and rearranged to create new substances. -creates a “Balanced” equation CH4 + 2O2 CO2 + 2H2O ...
... -atoms found on the reactants side will also be found on the products side. They will be broken apart and rearranged to create new substances. -creates a “Balanced” equation CH4 + 2O2 CO2 + 2H2O ...
CP Chemistry Midterm Study Guide
... 1. What types of properties are dependent upon the particles in a solution? 2. What is the % composition of oxygen in CO2? 3. Which part of the solution (solute or solvent) is water in an aqueous solution? 4. What is a precipitate? 5. Name and describe three types of mixtures. 6. Could you add more ...
... 1. What types of properties are dependent upon the particles in a solution? 2. What is the % composition of oxygen in CO2? 3. Which part of the solution (solute or solvent) is water in an aqueous solution? 4. What is a precipitate? 5. Name and describe three types of mixtures. 6. Could you add more ...
The effect of confinement on chemical reactions
... ethanol to produce ethyl acetate, CH3COOH + C2H5OH $ C2H5OOCCH3 + H2O, is a common industrial process in the synthesis of organic solvents. There is experimental evidence [16] that when this reaction is carried out in porous materials, the selectivity towards ethyl acetate depends on the adsorbent u ...
... ethanol to produce ethyl acetate, CH3COOH + C2H5OH $ C2H5OOCCH3 + H2O, is a common industrial process in the synthesis of organic solvents. There is experimental evidence [16] that when this reaction is carried out in porous materials, the selectivity towards ethyl acetate depends on the adsorbent u ...
File - Fidaa`s Level 2 Portfolio
... carboxylic acids, ketones, ethers, amines, and benzenes. They all have different properties that make them unique and are very important especially for this specific lab. Esters, the main topic for this lab, are part of the artificial flavors we will be making. Ester synthesis is when a chemical rea ...
... carboxylic acids, ketones, ethers, amines, and benzenes. They all have different properties that make them unique and are very important especially for this specific lab. Esters, the main topic for this lab, are part of the artificial flavors we will be making. Ester synthesis is when a chemical rea ...
Notes
... Two compounds react to form two new compounds. All double replacement reactions must have a "driving force" that removes a pair of ions from solution. Ions keep their same charges as reactants and products. Formation of a precipitate: A precipitate is an insoluble substance formed by the reaction of ...
... Two compounds react to form two new compounds. All double replacement reactions must have a "driving force" that removes a pair of ions from solution. Ions keep their same charges as reactants and products. Formation of a precipitate: A precipitate is an insoluble substance formed by the reaction of ...
File - Science With BLT
... ____ 74. In what kind of reaction does a single compound produce two or more simpler substances? a. decomposition reaction c. single-replacement reaction b. synthesis reaction d. ionic reaction ____ 75. The equation A + BX AX + B is the general equation for a a. double-replacement reaction. c. si ...
... ____ 74. In what kind of reaction does a single compound produce two or more simpler substances? a. decomposition reaction c. single-replacement reaction b. synthesis reaction d. ionic reaction ____ 75. The equation A + BX AX + B is the general equation for a a. double-replacement reaction. c. si ...
Solution Stoichiometry - Angelo State University
... solution are not ionized, weak electrolytes conduct electricity, but not very well. ...
... solution are not ionized, weak electrolytes conduct electricity, but not very well. ...
Fall Exam 4 - Chemistry - University of Kentucky
... Starting with answer "1" on SIDE 1, fill in the circle indicating the one best answer for each of the 60 questions in this examination. Your score is the sum of the appropriate credit for each response. Soon after the examination is finished, an examination key will be posted on Blackboard. Grading ...
... Starting with answer "1" on SIDE 1, fill in the circle indicating the one best answer for each of the 60 questions in this examination. Your score is the sum of the appropriate credit for each response. Soon after the examination is finished, an examination key will be posted on Blackboard. Grading ...
1. Explain electrophile and nucleophile. 2. Explain
... of CO2 and 0.0675g of H2O.In Carius determination 0.3925g of the substance gave 0.717g of dry AgCl.Find percentage composition of the substance. 5. Name the isotopes of Hydrogen and also write their symbols. 6. What causes the temporary and permanent hardness of water? 7. Explain electron deficient ...
... of CO2 and 0.0675g of H2O.In Carius determination 0.3925g of the substance gave 0.717g of dry AgCl.Find percentage composition of the substance. 5. Name the isotopes of Hydrogen and also write their symbols. 6. What causes the temporary and permanent hardness of water? 7. Explain electron deficient ...
II. Acids and Bases
... aqueous solution (ex: HCl). A base is a substance that contains a hydroxide group and dissociates to produce a hydroxide ion in aqueous solution (ex: NaOH). 4. HCl(g) H+(aq) + Cl-(aq) 5. NaOH(s) Na+(aq) + OH-(aq) ...
... aqueous solution (ex: HCl). A base is a substance that contains a hydroxide group and dissociates to produce a hydroxide ion in aqueous solution (ex: NaOH). 4. HCl(g) H+(aq) + Cl-(aq) 5. NaOH(s) Na+(aq) + OH-(aq) ...
GC-Final-Review-2014
... Iron (II)chloride ________________________ Copper(II) hydroxide _________________________ Acetic acid ______________________________ Magnesium phosphate ________________________ Ammonium dichromate ___________________________ ...
... Iron (II)chloride ________________________ Copper(II) hydroxide _________________________ Acetic acid ______________________________ Magnesium phosphate ________________________ Ammonium dichromate ___________________________ ...
acids and bases - Althea`s Academy
... Aprotonic solvents – subs that do not accept proton, do not behave as acids Hydroxide ion (OH-) – a radical composed of a hydrogen atom, an oxygen atom and an electron giving it a neagtive charge Responsible for the chemical properites of alkali Amphoteric subs – subs that may act as acid or base ...
... Aprotonic solvents – subs that do not accept proton, do not behave as acids Hydroxide ion (OH-) – a radical composed of a hydrogen atom, an oxygen atom and an electron giving it a neagtive charge Responsible for the chemical properites of alkali Amphoteric subs – subs that may act as acid or base ...
2A6
... Visible-light-induced molecular photodissociation of dimethyl disulfide ((CH3S)2) adsorbed on Ag(111) and Cu(111) surfaces was investigated by means of scanning tunneling microscopy (STM) combined with density functional theory (DFT) calculations. The visible-light-induced photodissociation on metal ...
... Visible-light-induced molecular photodissociation of dimethyl disulfide ((CH3S)2) adsorbed on Ag(111) and Cu(111) surfaces was investigated by means of scanning tunneling microscopy (STM) combined with density functional theory (DFT) calculations. The visible-light-induced photodissociation on metal ...
Chemical Reactions and Enzymes
... “lock and key” model effect of temp. and pH on enzyme activity effect of concentration on enzyme activity ...
... “lock and key” model effect of temp. and pH on enzyme activity effect of concentration on enzyme activity ...
Free Energy I
... Burning two moles of H2 in O2 (under conditions of constant P) would decrease the entropy of the system by 326.3 J/K for every mole of O2 or every two moles of water or H2. How much does the entropy change when 0.275 g of H2 is ignited with O2 in a constant-pressure system? ...
... Burning two moles of H2 in O2 (under conditions of constant P) would decrease the entropy of the system by 326.3 J/K for every mole of O2 or every two moles of water or H2. How much does the entropy change when 0.275 g of H2 is ignited with O2 in a constant-pressure system? ...
Chem 1A Practice Final
... volume. Considering only N2 and O2 in air, calculate the density of air at 1.0 atm, 25 oC. a) 0.590 g/L b) 1.18 g/L c) 2.46 g/L d) 14.1 g/L e) None of the above. 24. What kind of gases have low values of a in the van der Waals equation? a. Gases which have no affinity of each other b. Gases with a l ...
... volume. Considering only N2 and O2 in air, calculate the density of air at 1.0 atm, 25 oC. a) 0.590 g/L b) 1.18 g/L c) 2.46 g/L d) 14.1 g/L e) None of the above. 24. What kind of gases have low values of a in the van der Waals equation? a. Gases which have no affinity of each other b. Gases with a l ...
Chem 480A
... (There is an interesting problem in going from Equation 5a to Equation 5b which is not usually discussed. In Equation 5a the coefficients of the balanced chemical equation, a, b, etc. have units of moles, so that, for example, cC is moles times Joules per mole which leaves just units of Joules. How ...
... (There is an interesting problem in going from Equation 5a to Equation 5b which is not usually discussed. In Equation 5a the coefficients of the balanced chemical equation, a, b, etc. have units of moles, so that, for example, cC is moles times Joules per mole which leaves just units of Joules. How ...
2009 - NESACS
... crucial in creating C-12 but for a split second, 2 He−4 particles fuse to make Be-8 which is then struck by a third α particle, creating C-12. This improbable sequence is called the triple-alpha process because the net effect is to combine 3 α particles (He nuclei) to form a C-12 nucleus. This resul ...
... crucial in creating C-12 but for a split second, 2 He−4 particles fuse to make Be-8 which is then struck by a third α particle, creating C-12. This improbable sequence is called the triple-alpha process because the net effect is to combine 3 α particles (He nuclei) to form a C-12 nucleus. This resul ...
General, Organic, and Biological Chemistry
... A) different atomic numbers. B) the same atomic numbers but different numbers of protons. C) the same atomic numbers but different numbers of electrons. D) the same atomic number but different numbers of neutrons. E) the same atomic mass but different numbers of protons. 47) A sample of chlorine has ...
... A) different atomic numbers. B) the same atomic numbers but different numbers of protons. C) the same atomic numbers but different numbers of electrons. D) the same atomic number but different numbers of neutrons. E) the same atomic mass but different numbers of protons. 47) A sample of chlorine has ...
Discussion 9, Mahaffy et al., Chapter 15
... a. Oxidation is loss of electrons (acts as a reducing agent) b.Reduction is gain of electrons (acts as a oxidizing agent) Assigning Oxidation numbers c. Oxidation number is 0 for atoms in an element. d.The sum of all oxidation numbers in a molecule or ion must add up to the total charge. e. In compo ...
... a. Oxidation is loss of electrons (acts as a reducing agent) b.Reduction is gain of electrons (acts as a oxidizing agent) Assigning Oxidation numbers c. Oxidation number is 0 for atoms in an element. d.The sum of all oxidation numbers in a molecule or ion must add up to the total charge. e. In compo ...
Science24-UnitA-Section3.4
... you get a chemical equation. Chemical equations are used to represent all reactions. In mathematics you work with equations. What you do to one side of the equation must be done to the other side to keep the equation balanced. Similarly, in chemical equations you need have the same number of atoms o ...
... you get a chemical equation. Chemical equations are used to represent all reactions. In mathematics you work with equations. What you do to one side of the equation must be done to the other side to keep the equation balanced. Similarly, in chemical equations you need have the same number of atoms o ...
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.