College Chemistry I PHS 1025 Fall 2012 Practice Exam 3A
... MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Balance the chemical equation given below, and determine the number of grams of MgO needed 1) _______ to produce 15.0 g of Fe2O3. ___ MgO(s) + ___ Fe(s) → ___ Fe2O3(s) + ___ Mg(s) A) 11.4 g ...
... MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Balance the chemical equation given below, and determine the number of grams of MgO needed 1) _______ to produce 15.0 g of Fe2O3. ___ MgO(s) + ___ Fe(s) → ___ Fe2O3(s) + ___ Mg(s) A) 11.4 g ...
PPT
... has the lowest possible number. • Number the other substituents on the carbon chain. • An italic “N” is used as a prefix for a substituent on nitrogen. Examples: ...
... has the lowest possible number. • Number the other substituents on the carbon chain. • An italic “N” is used as a prefix for a substituent on nitrogen. Examples: ...
key sample questions test 1
... g. Which one of the following will always DECREASE the amount of O2 dissolved in water? increasing the temperature and increasing the pressure of O2 above the water increasing the temperature and decreasing the pressure of O2 above the water decreasing the temperature and increasing the pressure of ...
... g. Which one of the following will always DECREASE the amount of O2 dissolved in water? increasing the temperature and increasing the pressure of O2 above the water increasing the temperature and decreasing the pressure of O2 above the water decreasing the temperature and increasing the pressure of ...
Chapter 9 Alcohols, Ethers, and Epoxides
... • In step 1, the nucleophile attacks an electron-deficient carbon, thus cleaving the C—O bond and relieving the strain of the three-membered ring. • In step 2 the alkoxide is protonated with water to generate a neutral product with two functional groups on adjacent atoms. • Common nucleophiles that ...
... • In step 1, the nucleophile attacks an electron-deficient carbon, thus cleaving the C—O bond and relieving the strain of the three-membered ring. • In step 2 the alkoxide is protonated with water to generate a neutral product with two functional groups on adjacent atoms. • Common nucleophiles that ...
Moles Review
... 6) Given that exactly 4 quarts = 3.7854 liters convert the following: 2.85 quarts to liters and 7.888 liters to quarts 7) How many grams are there in 4.00 moles of He? 8) How many moles are there in 15.0 g of He? 9) How many grams are there in 0.025 mol of CO2? 10) How many moles are there in 4.02g ...
... 6) Given that exactly 4 quarts = 3.7854 liters convert the following: 2.85 quarts to liters and 7.888 liters to quarts 7) How many grams are there in 4.00 moles of He? 8) How many moles are there in 15.0 g of He? 9) How many grams are there in 0.025 mol of CO2? 10) How many moles are there in 4.02g ...
C5H12 + 8 O2 → 5 CO2 + 6 H2O
... 2AgNO3(aq) + CaCl2(aq) !" 2AgCl(s) + Ca(NO3)2(aq) A. Ag+, Cl!, and Ca2+ B. Cl! and Ca2+ C. Ag+ and NO3! D. Ca2+ and NO3! E. Ca2+ 2. Mixing solutions of K2SO4(aq) and BaCl2(aq) produces an insoluble salt. What is the identity of the spectator ions? ...
... 2AgNO3(aq) + CaCl2(aq) !" 2AgCl(s) + Ca(NO3)2(aq) A. Ag+, Cl!, and Ca2+ B. Cl! and Ca2+ C. Ag+ and NO3! D. Ca2+ and NO3! E. Ca2+ 2. Mixing solutions of K2SO4(aq) and BaCl2(aq) produces an insoluble salt. What is the identity of the spectator ions? ...
Chapter 3 Stoichiometry
... A chemical change involves a reorganization of the atoms in one or more substances. Chemical equation is a representation of a chemical reaction with the reactants on the left side of an arrow and the products on the right side C2H5OH + 3O2 2CO2 + 3H2O Reactants Products Atoms have been reorganize ...
... A chemical change involves a reorganization of the atoms in one or more substances. Chemical equation is a representation of a chemical reaction with the reactants on the left side of an arrow and the products on the right side C2H5OH + 3O2 2CO2 + 3H2O Reactants Products Atoms have been reorganize ...
Details
... 4. A guide book to mechanism in Organic chemistry (Orient-Longmens)- Peter Sykes 5. Organic reaction mechanism (Benjamin) R. Breslow 6. Mechanism and structure in Organic chemistry (Holt Reinh.)B. S. Gould. 7. Reactive Intermediates in Organic chemistry (John Wiley)N. S. Issacs. 8. Reaction mechanis ...
... 4. A guide book to mechanism in Organic chemistry (Orient-Longmens)- Peter Sykes 5. Organic reaction mechanism (Benjamin) R. Breslow 6. Mechanism and structure in Organic chemistry (Holt Reinh.)B. S. Gould. 7. Reactive Intermediates in Organic chemistry (John Wiley)N. S. Issacs. 8. Reaction mechanis ...
Chapter 12
... separate marketable fractions of crude oil. The more volatile fractions have a greater vapor pressure. ...
... separate marketable fractions of crude oil. The more volatile fractions have a greater vapor pressure. ...
Introduction to Organic Synthesis 2011
... well, and this will depend on their strength (soft vs. hard). Nucleophiles can be either negatively charged, such as RO-, or neutral, but possessing a per of electron in a high energy filled orbital. The most common types of nucleophiles have non-bonding lone pair of electrons, and they usually plac ...
... well, and this will depend on their strength (soft vs. hard). Nucleophiles can be either negatively charged, such as RO-, or neutral, but possessing a per of electron in a high energy filled orbital. The most common types of nucleophiles have non-bonding lone pair of electrons, and they usually plac ...
Document
... As noted earlier, an aldehyde is partially converted to its enolate anion by bases such as hydroxide ion and alkoxide ions. This type of condensations is character for aldehydes which have hydrogen atoms at the α-carbon atom. ...
... As noted earlier, an aldehyde is partially converted to its enolate anion by bases such as hydroxide ion and alkoxide ions. This type of condensations is character for aldehydes which have hydrogen atoms at the α-carbon atom. ...
Chapter 9. CARBOXYLIC ACIDS AND THEIR DERIVATIVES
... pharmaceutical chemist C.W. Scheele was the first to discover many carboxylic acids at the end of the 18th century, well before the theory of the chemical structure had been developed. Not only carboxylic acids themselves but also their functional derivatives are of chemical and biochemical interest ...
... pharmaceutical chemist C.W. Scheele was the first to discover many carboxylic acids at the end of the 18th century, well before the theory of the chemical structure had been developed. Not only carboxylic acids themselves but also their functional derivatives are of chemical and biochemical interest ...
CN>Chapter 22CT>Carbonyl Alpha
... The second carbonyl permit delocalization of the resulting enol The reaction can be rationalized by an internal acid-base reaction ...
... The second carbonyl permit delocalization of the resulting enol The reaction can be rationalized by an internal acid-base reaction ...
O R` R
... • Class I: Undergo nucleophilic acyl substituion. Includes carboxylic acid derivatives – (last chapter). • Class II: Do NOT contain a group that can be replaced by a nucleophile – (this chapter). O ...
... • Class I: Undergo nucleophilic acyl substituion. Includes carboxylic acid derivatives – (last chapter). • Class II: Do NOT contain a group that can be replaced by a nucleophile – (this chapter). O ...
Chapter 3 – Stoichiometry of Formulas and Equations This chapter
... Example: Consider the reaction: CS2 + 3 O2 CO2 + 2 SO2. What mass of O2 is required to react completely with 9.34 g carbon disulfide? ...
... Example: Consider the reaction: CS2 + 3 O2 CO2 + 2 SO2. What mass of O2 is required to react completely with 9.34 g carbon disulfide? ...
amine
... • Number the chain so the carbon bonded to the nitrogen has the lowest possible number. • Number the other substituents on the carbon chain. • An italic “N” is used as a prefix for a substituent on nitrogen. Examples: ...
... • Number the chain so the carbon bonded to the nitrogen has the lowest possible number. • Number the other substituents on the carbon chain. • An italic “N” is used as a prefix for a substituent on nitrogen. Examples: ...
Chapter 13 – Organic Chemistry
... Carbon atoms always have four bonds: four single bonds, two single and one double bond, two double bonds, or a single bond and a triple bond. Although carbon is the basic building block, organic compounds usually have hydrogen atoms as well. Oxygen and nitrogen are also common, but almost any other ...
... Carbon atoms always have four bonds: four single bonds, two single and one double bond, two double bonds, or a single bond and a triple bond. Although carbon is the basic building block, organic compounds usually have hydrogen atoms as well. Oxygen and nitrogen are also common, but almost any other ...
Answers, Problem Set 12 (full)... “2,4
... (b) A saturated hydrocarbon is one that contains as many H’s per carbon as possible, and so you could say that it is saturated “with H’s”. It contains no double or triple bonds. Once a double bond or triple bond is formed, there will be less H’s because C only forms 4 bonds before its valence shell ...
... (b) A saturated hydrocarbon is one that contains as many H’s per carbon as possible, and so you could say that it is saturated “with H’s”. It contains no double or triple bonds. Once a double bond or triple bond is formed, there will be less H’s because C only forms 4 bonds before its valence shell ...
Comments for pH, lime and sulfur recommendations
... Exceptions are arborvitae, taxus (yew), and Colorado blue spruce which prefer a pH of 6.0 – 7.0. To lime to pH 6.5, apply and incorporate ___ lbs calcitic lime or ___ lbs dolomitic lime per 1000 square feet. Dolomitic lime contains magnesium in addition to calcium, and should be used if the soil tes ...
... Exceptions are arborvitae, taxus (yew), and Colorado blue spruce which prefer a pH of 6.0 – 7.0. To lime to pH 6.5, apply and incorporate ___ lbs calcitic lime or ___ lbs dolomitic lime per 1000 square feet. Dolomitic lime contains magnesium in addition to calcium, and should be used if the soil tes ...
18-3-reading - WordPress.com
... form. The crystals have six water molecules for each unit of cobalt chloride. The formula for this compound is CoCl2 • 6H2O. The compound’s name is cobalt chloride hexahydrate. The prefix hexa- means “six,” so hexahydrate means “six waters.” You can remove water from these crystals by heating them. ...
... form. The crystals have six water molecules for each unit of cobalt chloride. The formula for this compound is CoCl2 • 6H2O. The compound’s name is cobalt chloride hexahydrate. The prefix hexa- means “six,” so hexahydrate means “six waters.” You can remove water from these crystals by heating them. ...
6 Thermodynamics
... (d) Acetaldehyde is formed from ethane, C2H4. Use the following reactions to determine the value of ∆S°rxn in J/mol-K for the combustion of acetaldehyde. 2 C2H4 (g) + O2 (g) → 2 CH3CHO (g) ∆S°1 = –323.86 J/mol-K C2H4 (g) + 3 O2 (g) → 2 CO2 (g) + 2 H2O (ℓ) ∆S°2 = –267.68 J/mol-K 2 CH3CHO (g) → 2 C2H4 ...
... (d) Acetaldehyde is formed from ethane, C2H4. Use the following reactions to determine the value of ∆S°rxn in J/mol-K for the combustion of acetaldehyde. 2 C2H4 (g) + O2 (g) → 2 CH3CHO (g) ∆S°1 = –323.86 J/mol-K C2H4 (g) + 3 O2 (g) → 2 CO2 (g) + 2 H2O (ℓ) ∆S°2 = –267.68 J/mol-K 2 CH3CHO (g) → 2 C2H4 ...
2010 `A` Levels Suggested Solutions
... the highly exothermic enthalpy change of hydration by water. (ii) Inorganic by-product : Br2(g) + SO2(g) NaBr + H2SO4 à NaHSO4 + HBr 2HBr(g) + H2SO4(l) Br2(g) + SO2(g) + 2H2O(l) Organic by-product: But-1-ene CH3CH2CH2CH2OH à CH3CH2CH2C=CH2 + H2O It was expected that candidates would consider the w ...
... the highly exothermic enthalpy change of hydration by water. (ii) Inorganic by-product : Br2(g) + SO2(g) NaBr + H2SO4 à NaHSO4 + HBr 2HBr(g) + H2SO4(l) Br2(g) + SO2(g) + 2H2O(l) Organic by-product: But-1-ene CH3CH2CH2CH2OH à CH3CH2CH2C=CH2 + H2O It was expected that candidates would consider the w ...
Alcohols I Reading: Wade chapter 10, sections 10-1- 10
... For the chlorinated derivatives of enthanol (ClCH2CH2OH, Cl3CCH2OH), the inductive electron-withdrawing effect of the local halogens enhances the acidity of the parent alcohols; this effect is additive, with trichloroethanol being more acidic than chloroethanol and ethanol. Phenol (an aromatic ring ...
... For the chlorinated derivatives of enthanol (ClCH2CH2OH, Cl3CCH2OH), the inductive electron-withdrawing effect of the local halogens enhances the acidity of the parent alcohols; this effect is additive, with trichloroethanol being more acidic than chloroethanol and ethanol. Phenol (an aromatic ring ...
Organosulfur compounds
Organosulfur compounds are organic compounds that contain sulfur. They are often associated with foul odors, but many of the sweetest compounds known are organosulfur derivatives, e.g., saccharin. Nature abounds with organosulfur compounds—sulfur is essential for life. Of the 20 common amino acids, two (cysteine and methionine) are organosulfur compounds, and the antibiotics penicillin (pictured below) and sulfa drugs both contain sulfur. While sulfur-containing antibiotics save many lives, sulfur mustard is a deadly chemical warfare agent. Fossil fuels, coal, petroleum, and natural gas, which are derived from ancient organisms, necessarily contain organosulfur compounds, the removal of which is a major focus of oil refineries.Sulfur shares the chalcogen group with oxygen, selenium and tellurium, and it is expected that organosulfur compounds have similarities with carbon–oxygen, carbon–selenium and carbon–tellurium compounds, which is true to some extent.A classical chemical test for the detection of sulfur compounds is the Carius halogen method.