The presence of an aromatic ring or other
... Procedure: Dissolve 2 drops of a liquid or 25 mg of a solid compound (known or unknown) in 2 mL of water or ethanol. Slowly add 10-20 drops of the potassium permanganate solution drop-wise while shaking. In a positive test, the purple color of the reagent is discharged, and a brown precipitate of ma ...
... Procedure: Dissolve 2 drops of a liquid or 25 mg of a solid compound (known or unknown) in 2 mL of water or ethanol. Slowly add 10-20 drops of the potassium permanganate solution drop-wise while shaking. In a positive test, the purple color of the reagent is discharged, and a brown precipitate of ma ...
Sample Exercise 20.1 Identifying Oxidizing and Reducing Agents
... 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 half-reaction. In the first half-reaction the presence of one Cr2O72– among the reactants requires two Cr3+ among the products. The seven oxygen atoms in Cr2 ...
... 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 half-reaction. In the first half-reaction the presence of one Cr2O72– among the reactants requires two Cr3+ among the products. The seven oxygen atoms in Cr2 ...
Functional Groups III
... The hydrogen atoms in the –NH2 group are sufficiently positive to form a hydrogen bond with a lone pair on the oxygen atom of another molecule. ...
... The hydrogen atoms in the –NH2 group are sufficiently positive to form a hydrogen bond with a lone pair on the oxygen atom of another molecule. ...
PDF Chapter 14 Chemical Kinetics
... Figure 15.2b and c. In (a) the Cl‐ ion approaches the C(CH3)3+ ion from the open side, so the Cl‐ lone pair of electrons can reach the open site on the central C atom and form the bond to make the product. ...
... Figure 15.2b and c. In (a) the Cl‐ ion approaches the C(CH3)3+ ion from the open side, so the Cl‐ lone pair of electrons can reach the open site on the central C atom and form the bond to make the product. ...
Chemical Equations and Reactions
... names of the reactants and products with appropriate symbols and formulas. Methane is a molecular compound composed of one carbon atom and four hydrogen atoms. Its chemical formula is CH4. Recall that oxygen exists in nature as diatomic molecules; it is therefore represented as O2. The correct formu ...
... names of the reactants and products with appropriate symbols and formulas. Methane is a molecular compound composed of one carbon atom and four hydrogen atoms. Its chemical formula is CH4. Recall that oxygen exists in nature as diatomic molecules; it is therefore represented as O2. The correct formu ...
Worked out problems
... 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 half-reaction. In the first half-reaction the presence of one Cr2O72– among the reactants requires two Cr3+ among the products. The seven oxygen atoms in Cr2 ...
... 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 half-reaction. In the first half-reaction the presence of one Cr2O72– among the reactants requires two Cr3+ among the products. The seven oxygen atoms in Cr2 ...
STOICHIOMETRY REVIEW WORKSHEET
... How many grams of sodium sulfate will be formed if you start with 200 grams of sodium hydroxide and you have an excess of sulfuric acid? ...
... How many grams of sodium sulfate will be formed if you start with 200 grams of sodium hydroxide and you have an excess of sulfuric acid? ...
supplemenatary material - Royal Society of Chemistry
... was purged and transferred to the evacuated autoclave, which was pressurized to 30 bar of CO/H2 and incubated for at least 3 h. the autoclave was cooled and partially depressurized and the styrene dissolved in the rest of the toluene was injected into the autoclave, which was then pressurized and he ...
... was purged and transferred to the evacuated autoclave, which was pressurized to 30 bar of CO/H2 and incubated for at least 3 h. the autoclave was cooled and partially depressurized and the styrene dissolved in the rest of the toluene was injected into the autoclave, which was then pressurized and he ...
CHEM 121 Chapter 14. Name: Date: ______ 1. The simplest alcohol
... D) more than one correct response E) no correct response 23. The solubility of alcohols in water A) decreases as the carbon chain length increases. B) decreases as the number of –OH groups present increases. C) increases with increasing molecular mass. D) more than one correct response E) no correct ...
... D) more than one correct response E) no correct response 23. The solubility of alcohols in water A) decreases as the carbon chain length increases. B) decreases as the number of –OH groups present increases. C) increases with increasing molecular mass. D) more than one correct response E) no correct ...
Selective Incorporation of Difluoromethylene
... α,α-difluoroacetophenones with aryl halides (Scheme 8).[24b] For convenience, they prepared a single-component palladacyclic complex containing P(t-Bu) Cy2 as dative ligand. A range of functionalities were tolerated under these reaction conditions. It is noteworthy that both aryl bromide and aryl ch ...
... α,α-difluoroacetophenones with aryl halides (Scheme 8).[24b] For convenience, they prepared a single-component palladacyclic complex containing P(t-Bu) Cy2 as dative ligand. A range of functionalities were tolerated under these reaction conditions. It is noteworthy that both aryl bromide and aryl ch ...
10.4 Alcohols - SCIS Teachers
... •The physical properties of alcohols are similar to those of both water and hydrocarbons •The shorter chain alcohols such as methanol and ethanol are similar to water, in general they •have higher boiling points than hydrocarbons but lower than water •dissolve in water to some degree •are more polar ...
... •The physical properties of alcohols are similar to those of both water and hydrocarbons •The shorter chain alcohols such as methanol and ethanol are similar to water, in general they •have higher boiling points than hydrocarbons but lower than water •dissolve in water to some degree •are more polar ...
alcohols!
... the sheets, operating tools, and even his patients. And a crazy thing happened. His patients started living! He became known as “the Great Lister” • Listerine is named after him, but he didn’t invent it himself. ...
... the sheets, operating tools, and even his patients. And a crazy thing happened. His patients started living! He became known as “the Great Lister” • Listerine is named after him, but he didn’t invent it himself. ...
Electrophilic Selenium Catalysis with Electrophilic N
... Functionalization of alkenes is a perpetual goal in organic synthesis. One of the attractive routes to elaborate the carbon–carbon double bond of alkenes is through electrophilic selenium reagent-promoted selenofunctionalization. In this context, several electrophilic organoselenium reagents ArSeX ( ...
... Functionalization of alkenes is a perpetual goal in organic synthesis. One of the attractive routes to elaborate the carbon–carbon double bond of alkenes is through electrophilic selenium reagent-promoted selenofunctionalization. In this context, several electrophilic organoselenium reagents ArSeX ( ...
Unit 6: Reactions and Stoichiometry
... Convert the following values using dimensional analysis. You must show all work! 1. How many grams are in 4.2 moles of Mg? ...
... Convert the following values using dimensional analysis. You must show all work! 1. How many grams are in 4.2 moles of Mg? ...
CH_18_7_Fatty_Acid_Oxidation
... Fatty acid activation • prepares them for transport through the inner membrane of ...
... Fatty acid activation • prepares them for transport through the inner membrane of ...
COOH HOOC COOH HOOC
... Reactions: Not only the oxygen atom but also the halogen atom pulls out electrons from the carbon atom. The positive charge made this way attracts nucleophiles/electrophiles/free radicals. ...
... Reactions: Not only the oxygen atom but also the halogen atom pulls out electrons from the carbon atom. The positive charge made this way attracts nucleophiles/electrophiles/free radicals. ...
View/Open - Minerva Access
... and R2 groups are used, and only CO2 is produced as a waste byproduct (eq. 4, Scheme 1). Not surprisingly, this class of reaction has also received considerable recent attention from the organic chemistry community [16]. However, the concept of using metal catalysts to selectively decompose esters i ...
... and R2 groups are used, and only CO2 is produced as a waste byproduct (eq. 4, Scheme 1). Not surprisingly, this class of reaction has also received considerable recent attention from the organic chemistry community [16]. However, the concept of using metal catalysts to selectively decompose esters i ...
more aromatic chemistry
... Acidity of Phenols • Phenols and alcohols both contain hydroxyl groups however they are classified as separate functional groups. • Phenols have different properties than alcohols, most noteworthy is their acidity (pKa difference of 106) ...
... Acidity of Phenols • Phenols and alcohols both contain hydroxyl groups however they are classified as separate functional groups. • Phenols have different properties than alcohols, most noteworthy is their acidity (pKa difference of 106) ...
Worksheet Significant Figures
... graphs are used when the data is qualitative (descriptive, based on observations or categories of data). Line graphs are used when the data is quantitative (more precise, measured with tools). **VERY IMPORTANT** When designing an experiment, you should have only one independent and one dependent var ...
... graphs are used when the data is qualitative (descriptive, based on observations or categories of data). Line graphs are used when the data is quantitative (more precise, measured with tools). **VERY IMPORTANT** When designing an experiment, you should have only one independent and one dependent var ...
Lectures 37-38 - U of L Class Index
... particular, the conjugate base (acetate; CH3CO2-) is much more stable than the original base (hydroxide, OH-). This makes hydroxide a stronger base than acetate. It also makes acetic acid (pKa=4.7) a stronger acid than water (pKa=14). ...
... particular, the conjugate base (acetate; CH3CO2-) is much more stable than the original base (hydroxide, OH-). This makes hydroxide a stronger base than acetate. It also makes acetic acid (pKa=4.7) a stronger acid than water (pKa=14). ...
![ch14[1].](http://s1.studyres.com/store/data/008194332_1-718c2a98c6e207af4c53dcbdf81c2eae-300x300.png)
ch14[1].
... • we can use NaBH4 to reduce an aldehyde or ketone in the presence of a COOH group. O C6 H5 ...
... • we can use NaBH4 to reduce an aldehyde or ketone in the presence of a COOH group. O C6 H5 ...
Synthesis of Nitrogen-, Oxygen- and Sulphur
... ditionally, we prepared 1,3,5-tris((4-phenyl-1-H-1,2,3-triazol1-yl)methyl)benzene (9) by addition of three equivalents of phenylacetylene to 7 in the presence of a catalytic amount of CuI (Scheme 5) [13]. Examination of the reactivity of compound 8 in Michael addition reactions revealed that the exp ...
... ditionally, we prepared 1,3,5-tris((4-phenyl-1-H-1,2,3-triazol1-yl)methyl)benzene (9) by addition of three equivalents of phenylacetylene to 7 in the presence of a catalytic amount of CuI (Scheme 5) [13]. Examination of the reactivity of compound 8 in Michael addition reactions revealed that the exp ...
Review - gbschemphys
... Suppose that a student wishes to solve a problem involving the determination of the mass of product produced if a given amount of moles of reactant was reacted. Which quantities would be essential in order to solve such a problem? Bubble in all that apply - but only those that are essential to this ...
... Suppose that a student wishes to solve a problem involving the determination of the mass of product produced if a given amount of moles of reactant was reacted. Which quantities would be essential in order to solve such a problem? Bubble in all that apply - but only those that are essential to this ...
Strychnine total synthesis
Strychnine total synthesis in chemistry describes the total synthesis of the complex biomolecule strychnine. The first reported method by the group of Robert Burns Woodward in 1954 is considered a classic in this research field. At the time it formed the natural conclusion to an elaborate process of molecular structure elucidation that started with the isolation of strychnine from the beans of Strychnos ignatii by Pierre Joseph Pelletier and Joseph Bienaimé Caventou in 1818. Major contributors to the entire effort were Sir Robert Robinson with over 250 publications and Hermann Leuchs with another 125 papers in a time span of 40 years. Robinson was awarded the Nobel Prize in Chemistry in 1947 for his work on alkaloids, strychnine included. The process of chemical identification was completed with publications in 1946 by Robinson and later confirmed by Woodward in 1947. X-ray structures establishing the absolute configuration became available between 1947 and 1951 with publications from J. M. Bijvoet and J.H. Robertson .Woodward published a very brief account on the strychnine synthesis in 1954 (just 3 pages) and a lengthy one (42 pages) in 1963.Many more methods exist and reported by the research groups of Magnus, Overman, Kuehne, Rawal, Bosch, Vollhardt, Mori, Shibasaki, Li, Fukuyama Vanderwal and MacMillan. Synthetic (+)-strychnine is also known. Racemic synthesises were published by Padwa in 2007 and in 2010 by Andrade and by Reissig.In his 1963 publication Woodward quoted Sir Robert Robinson who said for its molecular size it is the most complex substance known.